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Mount Blue Sky

One-line summary: The highest paved road in North America climbs from Idaho Springs to the 14,265-ft summit of Mount Blue Sky — renamed in 2023 from Mt. Evans in deference to the Cheyenne and Arapaho Nations — passing through five life zones, the highest botanical garden on the continent, 1,600+ year-old bristlecone pines, glacial cirque tarns at 12,830 ft, and a real chance of mountain goats licking the rental car at 14,000 ft.

Mount Blue Sky

One-line summary: The highest paved road in North America climbs from Idaho Springs to the 14,265-ft summit of Mount Blue Sky — renamed in 2023 from Mt. Evans in deference to the Cheyenne and Arapaho Nations — passing through five life zones, the highest botanical garden on the continent, 1,600+ year-old bristlecone pines, glacial cirque tarns at 12,830 ft, and a real chance of mountain goats licking the rental car at 14,000 ft.

Scope note: this template covers steps 1–3 of the adventures pipeline (identify, support Maxine's research, shape goals). The deliverable webpage

  • video at step 6 is Maxine's own work — don't scaffold it here.

Links & Maps

Official:

Maps:

Reference & background:

The renaming (read this with Maxine before going)

The mountain was officially renamed from Mount Evans to Mount Blue Sky by the US Board on Geographic Names in September 2023, at the formal request of the Cheyenne and Arapaho Tribes. The new name comes from the Arapaho (a name meaning roughly "Blue Sky People") and the Cheyenne "Blue Sky Ceremony."

The old name honored John Evans, the second Territorial Governor of Colorado (1862–1865), who bore institutional responsibility for the Sand Creek Massacre (Nov 29, 1864) — a US 3rd Colorado Cavalry attack on a Cheyenne and Arapaho village in southeastern Colorado, killing approximately 230 people, the majority women, children, and elderly. Evans was forced to resign in 1865 after a federal investigation; he had created the conditions for the massacre by declaring it lawful for "all good citizens" of Colorado "to kill and destroy" hostile Indians on sight, and by authorizing the cavalry unit that carried out the attack. The 1864 attack is one of the worst documented atrocities in US Indigenous history.

This is not a side note for the trip — it is the trip's frame. We are driving up a mountain whose 159-year naming history was a daily celebration of someone responsible for a massacre, and whose new name is an act of restitution to the people he attacked. Maxine should research the renaming process itself: how the change happened (Cheyenne and Arapaho-led, decade-long campaign by Northern Arapaho and Northern Cheyenne tribal governments + Colorado advocates), what opposition existed, what other Evans-named places have or haven't been changed (Evans, CO; Mount Evans Wilderness — still pending; Evans Avenue Denver). This is active US history, not settled history.

If the trip can be coordinated with a visit to the Sand Creek Massacre National Historic Site (Eads, CO — ~3.5 hr SE of Denver) on the same Colorado trip, the pairing turns the mountain visit into a real reckoning rather than a scenic drive.

Site geography (read before planning the day)

The Mount Blue Sky Scenic Byway is 28 miles from Idaho Springs to the summit parking lot, climbing from ~7,500 ft to 14,130 ft (the parking lot; the actual summit is a ~0.25 mi rocky walk up from there to 14,265 ft).

The byway has two segments:

  • CO-103 (Squaw Pass Road), Idaho Springs → Echo Lake, ~13 mi, ~7,500 ft → 10,600 ft. Mostly forest, regular alpine road.
  • CO-5 (Mount Blue Sky Highway), Echo Lake → summit, ~14 mi, 10,600 ft → 14,130 ft. This is the highest paved road in North America. Built 1927–1930. Above tree line for the upper 9 miles. The fee/reservation kicks in at the Echo Lake gate.

Key stops on CO-5, in order from Echo Lake going up:

  • Mount Goliath Natural Area (11,500 ft) — Denver Botanic Gardens Alpine Garden. Bristlecone pines (Pinus aristata), some 1,600+ years old. The world's highest botanic gardens.
  • Summit Lake (12,830 ft) — a true glacial cirque tarn in a textbook glacially-carved cirque. Massive cirque headwalls behind. Parking lot, restroom, short walk to lake.
  • Switchbacks above Summit Lake — sustained 15+% grade, hairpin turns. Mountain goats (Oreamnos americanus) regular on this section. Pull over for goats; do NOT feed.
  • Summit parking lot (14,130 ft) — short walk to the summit cairn (14,265 ft) and the ruins of the Crest House, the 1940s summit lodge that burned in a 1979 propane explosion and was never rebuilt; the roofless shelter remains as an interpretive structure.

The summit views on a clear day include: Pikes Peak (south, ~80 mi), the Indian Peaks (north), the Sawatch Range and Mount Elbert (west, ~60 mi — Colorado's highest at 14,440 ft), and Denver / the High Plains (east).

Must-See / Big Items

Ranked roughly in driving order (and thus by altitude — important for acclimatization on the way up).

  1. Idaho Springs (start) — a real mining town founded in the 1859 Colorado Gold Rush. Two-block historic downtown. Beau Jo's Pizza is the trip-tradition stop (or the Wildflower Café). Use it for breakfast, restroom, and last-chance fill-up before going up.
  2. Echo Lake (10,600 ft) — first proper alpine lake, lodge (operating status varies), gate for the byway.
  3. Mount Goliath Natural Area + Denver Botanic Gardens Alpine Garden (11,500 ft) — interpretive trail (M. Walter Pesman Trail, ~1 mi) through the bristlecone grove. Some of these trees were standing when the Roman Empire fell. This is the highest botanical garden in North America. Reading the bristlecone-pine longevity story (oldest known individual: ~4,800 years in CA's White Mountains) in front of a 1,600-year-old example you can touch is the educational prize of the byway.
  4. Summit Lake (12,830 ft) — glacial cirque tarn. Textbook cirque geometry. Short walk to lake edge. Wildflowers in July (alpine forget-me-not, moss campion, alpine sunflower). This is also the highest-elevation Arapaho ceremonial site on the byway and a designated Traditional Cultural Property of the Cheyenne and Arapaho Tribes.
  5. Mountain goats and bighorn sheep on the switchbacks (12,800–14,000 ft) — Oreamnos americanus (mountain goat, actually a goat-antelope; not a true goat) and Ovis canadensis (bighorn sheep). Goats are aggressive about salt and will lick parked cars. Pull all the way off the road, watch from inside the vehicle, do not feed.
  6. The summit cairn and Crest House ruins (14,130 → 14,265 ft) — short walk from parking lot to the actual high point. Ruins of the 1941 Crest House restaurant + observation building, which burned in a Sep 1, 1979 propane explosion. The roofless rock shell remains as a wind shelter and informal interpretive site. Brass benchmark at the summit.
  7. The view — 360° panorama. On a clear day: Mount Elbert + Sawatch (W), Indian Peaks + RMNP (N), Pikes Peak (S), Denver + High Plains (E). Note which fourteeners she can identify.
  8. The Echo Lake Lodge (10,600 ft, on the way down) — historic 1926 lodge, often the post-summit hot-chocolate stop. Hours vary; verify open.
  9. Meyer Ranch Park or St. Mary's Glacier as alternates if the byway closes due to weather. Both at lower elevation.

Stretch goals (do if time allows / energy holds):

  • Mount Goliath full trail (Pesman Trail, ~1 mi loop) rather than just the parking-lot view of the bristlecones — the upper bristlecones are best.
  • Chicago Lakes Trail (3.5 mi RT from Echo Lake) — easier-elevation hike to glacial lakes. Skip if doing the summit.
  • St. Mary's Glacier (~30 min off the route, 10,400 ft) — a permanent snowfield (technically a "perennial snowfield" — not technically a glacier because it doesn't flow detectably).
  • Argo Mine Tour in Idaho Springs — historic gold mill, Maxine's industrial-history angle.

Research angles for Maxine

The research is hers — list questions to investigate and sources to start from, not answers. Pitch above grade level.

Hook into Maxine's current interests: (ask before finalizing — what is she into right now? If she's currently on a biology kick, push the alpine ecology + bristlecone longevity threads. If it's geology, push the Laramide uplift + glacial cirque carving thread. If it's history/justice, push the renaming + Sand Creek thread. If it's physiology, push the altitude/oxygen-saturation thread.)

Questions worth chasing:

  • Science (alpine ecology): The byway crosses five life zones in 28 miles — Upper Sonoran/foothills, Montane, Subalpine, Alpine, and the "nival" zone (perpetual rock + snow). What temperature and precipitation gradients drive these transitions? Why is tree line at ~11,500 ft here but ~9,500 ft farther north in Wyoming and ~13,500 ft in Mexico? What's the adiabatic lapse rate (the rate temperature drops with altitude in dry vs. moist air)?
  • Science (bristlecone biology): Pinus aristata (the Rocky Mountain bristlecone) at Mount Goliath lives 1,600+ years; its cousin P. longaeva in California's White Mountains has documented individuals 4,800+ years old. What's the longevity mechanism — slow growth in harsh conditions, dense resinous wood that resists rot, sectorial xylem flow that keeps part of the tree alive after the rest dies? How does dendrochronology use bristlecones to calibrate radiocarbon dating?
  • Science (alpine plants): The Mount Goliath alpine garden has hundreds of species adapted to ~10 weeks of growing season, extreme UV, freezing nights, and 100+ mph winds. What are the adaptations — cushion habit, hairy leaves, deep taproots, antifreeze proteins? How does moss campion (Silene acaulis) grow at >12,000 ft when it should freeze?
  • Science (geomorphology): Summit Lake is a glacial cirque tarn — a small lake in an amphitheatre-shaped basin gouged by a former glacier. What's the cirque geometry: headwall, basin (containing the tarn), and downstream lip/moraine? What was the volume and direction of the Pleistocene glacier that carved this? How does cirque-forming erosion (plucking + abrasion) differ from valley glacier erosion? Where else on the byway can you see arêtes, horns, U-shaped valleys?
  • Science (geology): Mount Blue Sky is mostly Precambrian (Proterozoic) gneiss and granite — basement rock ~1.7 billion years old, uplifted by the Laramide ~70–40 Ma. How is this basement different from the sedimentary cover at Dinosaur Ridge and Red Rocks? What's the connection between the Laramide basement-cored uplifts here and the same orogeny that tilted the Dakota Hogback 30 miles east?
  • Science (altitude physiology): At 14,265 ft, atmospheric pressure is ~60% of sea level (~440 mmHg vs. 760). Partial pressure of oxygen is ~88 mmHg vs. ~159. What does this do to hemoglobin saturation? At what altitude does the average sea-level acclimatized person start experiencing altitude sickness symptoms (~8,000 ft and up, variably)? What's the difference between acute mountain sickness (AMS), high-altitude pulmonary edema (HAPE), and high-altitude cerebral edema (HACE)? Why does Diamox work? Why does descent always work?
  • Science (atmospheric): UV intensity increases ~10–12% per 1,000 m of elevation gain. At 14,265 ft, UV at noon can be 50–60% higher than at sea level. Combined with snow reflectance (UV reflects up to 80% off fresh snow), summit-zone UV exposure is genuinely dangerous in hours, not days. What does this mean for sunscreen, eyewear, skin in Indigenous high-altitude populations vs. visitors?
  • History (renaming): Trace the renaming campaign from its origins (Northern Arapaho tribal council resolution, ~2015 onward) through the Colorado Geographic Naming Advisory Board recommendation (2022), to the US Board on Geographic Names decision (September 2023). Who led the campaign? What arguments were made for and against? Why did "Blue Sky" win over alternative names? What's still named for John Evans in Colorado (the town of Evans, Mount Evans Wilderness — still pending change, Evans Avenue in Denver, etc.)?
  • History (Sand Creek): Read the primary-source accounts of Sand Creek (Nov 29, 1864). Major Edward Wynkoop's report. Captain Silas Soule's letter (Soule refused to fire and later testified against Chivington; he was murdered for it in 1865). The 1865 congressional investigation. What is the National Historic Site doing today, who runs it, and what's the relationship with the Cheyenne and Arapaho Nations? How does a country acknowledge an atrocity in its public landscape?
  • History (Idaho Springs and the 1859 gold rush): How did mining build Colorado before the railroad? What's the legacy of mining contamination in the Clear Creek watershed (the Argo Mill tunnel drainage is still a Superfund concern)? Maxine could compare to the cinnabar mining at Terlingua near Big Bend — different mineral, same boom-and-bust pattern.
  • Writing: Write a 600-word piece on the renaming, structured as two parallel arguments: (1) the case that public-landscape names matter and renaming is a real act of repair; (2) the case that "Mount Evans" was a historical reality and renaming erases that history. Maxine's job is to make both arguments as strongly as possible, then synthesize. (This is hard. It's also exactly the writing skill she needs.)
  • Writing (place-portrait): Spend 20 minutes on the summit and write a place-portrait. Constraint: don't describe what you see — describe what you hear, feel, and smell. Wind, breathing, temperature, the silence, the cold metal of the summit cairn.
  • Math (pressure): Atmospheric pressure follows roughly P = P0 × exp(-h/H) where H ≈ 8.4 km (the atmospheric scale height). Compute pressure at 14,265 ft, 12,830 ft (Summit Lake), 10,600 ft (Echo Lake), 7,500 ft (Idaho Springs), and 5,280 ft (Denver). Compare to a sea-level reference. Check against an actual altimeter reading at each stop.
  • Math (oxygen): At each altitude, compute partial pressure of oxygen (21% of total). Plot oxygen partial pressure vs. altitude. Find the altitude where oxygen partial pressure equals what you'd find in an oxygen-depleted hypoxic-training environment at sea level. (This is roughly where elite-athlete altitude training works.)
  • Math (driving): The byway is 28 mi from Idaho Springs to the summit, gaining ~6,800 ft. Average grade? Sustained grade on the upper switchbacks (~5 mi, ~3,000 ft gain) — compute and compare to highway-design maximum grades (usually 6%).
  • Math (sun): At the summit at noon on the summer solstice, what's the solar altitude angle? Why is UV so much higher here despite the same noon-sun position as Denver below? (Hint: less atmosphere to absorb UV-B.)
  • Art: Field-sketch the cirque containing Summit Lake — annotate headwall, tarn, lateral moraines if visible. Compare to a textbook diagram. Then sketch the bristlecone trunk geometry at Mount Goliath: the way the bark spirals because the tree's vascular system literally rotates around the trunk as it adapts to centuries of wind direction shifts.
  • Art (light at altitude): Photograph or paint the same scene at three altitudes — Idaho Springs, Summit Lake, summit. Note the change in light quality: less atmospheric scattering at altitude means harsher shadows, deeper blue sky, more contrast.

Starting sources (not exhaustive — she'll find more):

Observable field goals

Goals Maxine can verify or document in the field at step 5 (confirm & document). Concrete things to look at, count, measure, identify, or photograph — not vague "learn about X."

  • At each stop (Idaho Springs, Echo Lake, Mount Goliath, Summit Lake, summit), record: (a) altitude from her phone GPS, (b) her resting pulse rate (count for 30 sec, double it), (c) any altitude-sickness symptoms (none / headache / nausea / dizziness on a 0–3 scale). Plot pulse vs. altitude at the end of the day.
  • At Mount Goliath: photograph one bristlecone pine. Estimate its age from the visible trunk diameter (rough rule: bristlecones at this elevation grow ~1 mm of diameter per year; multiply visible diameter in mm by ~1 = age in years). Note any "strip-bark" — the partial trunk death pattern characteristic of ancient bristlecones.
  • At Summit Lake: photograph the cirque geometry. Identify the headwall (the steep back wall), the tarn (the lake), and any visible moraines. Compare to a textbook cirque cross-section sketch she brings or draws.
  • Identify and photograph at least 3 alpine plant species at the alpine garden or Summit Lake: candidates include moss campion (Silene acaulis), alpine forget-me-not (Eritrichium nanum), alpine sunflower / old-man-of-the-mountain (Hymenoxys grandiflora), king's crown (Rhodiola integrifolia).
  • If a mountain goat or bighorn sheep is sighted: photograph from inside the vehicle. Note location (altitude, terrain), behavior (eating? walking? salt-licking?), and group size. Do not approach.
  • At the summit: photograph the brass benchmark and the surrounding 360° view. Identify by name at least three of the named peaks visible (Pikes Peak to the south, Mt Elbert to the west, the Indian Peaks to the north).
  • At the Crest House ruins: photograph the structure. Read any interpretive signage about the 1979 propane explosion. Note what's left and what was lost.
  • Record summit-zone weather: temperature, wind speed (estimate or use a phone anemometer app), cloud type. Compare to the Denver-area forecast for the same day.
  • Take one photograph of the renaming signage if present. Note the date of the renaming, the new name, and how (if at all) the signage acknowledges the Cheyenne and Arapaho origins.

Suggested itinerary

Full-day plan from Denver lodging. Day 3 or later of the Colorado trip — do not do this on day 1 from Austin.

  1. 6:30 am — leave Denver. Coffee + restroom. Drive ~1 hr to Idaho Springs.
  2. 7:45 am — Idaho Springs breakfast at Beau Jo's or Wildflower Café. Restroom. Gas. Pulse + altitude baseline reading. Verify reservation.
  3. 8:30 am — drive CO-103 up to Echo Lake. ~30 min, gains 3,000 ft. First slow drive — Maxine logs how she feels.
  4. 9:15 am — Echo Lake gate. Reservation check.
  5. 9:30 am — Mount Goliath Natural Area + Alpine Garden. Short walk among bristlecones (~45 min). Pulse reading. Photo of one ancient tree.
  6. 10:45 am — Summit Lake (12,830 ft). Walk the lakeshore, photograph cirque geometry, identify alpine plants. ~45 min. Pulse reading.
  7. 11:45 am — drive the switchbacks to the summit parking lot (~30 min). Watch for mountain goats.
  8. 12:15 pm — summit. Walk to high point and Crest House ruins. Maximum 30–45 min on top — afternoon thunderstorm risk + altitude exposure. Pulse reading. Photographs. Place-portrait writing.
  9. 1:00 pm — start descent. Quick stop at Summit Lake again if weather holds, otherwise straight down.
  10. 2:30 pm — back in Idaho Springs. Lunch / hot chocolate.
  11. 4:00 pm — back at Denver lodging. Maxine writes up the day's altitude log + place-portrait.

Family roles:

  • Chris leads: logistics, reservation management, driving (the switchback section is real driving — no need for Maxine or Heather to do it), pulse/altitude logging, calling the turnaround if anyone shows AMS symptoms.
  • Heather leads: alpine ecology at Mount Goliath — botanical-identification eye. Wildlife spotting eye (she's the goat-finder).
  • Maxine drives: her own physiology log (pulse, symptoms, hydration, snack timing). Owns the place-portrait writing at the summit. Owns the renaming research and decides how she wants to frame the renaming in her own deliverable.
  • Solo vs. both parents: both. Altitude can hit anyone — having a second adult watching for symptoms in the third person matters.

Connections

Combines well with:

  • Rocky Mountain National Park — same general elevation regime, same altitude-acclimation logic. Don't try to do both on consecutive days from low-altitude lodging; build in a buffer day.
  • Denver Museum of Nature & Science — has excellent alpine-ecology and Indigenous-history galleries. Visit before the byway to prime the science and the Sand Creek context.
  • NCAR Mesa Lab — Boulder atmospheric science research center, perfect tie-in to the altitude/pressure/UV math.
  • Sand Creek Massacre NHS (Eads, CO, ~3.5 hr SE of Denver) — if the trip can fit it, the Mount Blue Sky → Sand Creek pairing is the educational arc. Hard to combine in one trip but feasible with a 5+ day plan.
  • Garden of the Gods — different geology (Fountain Fm vs. Precambrian basement) but pair conceptually as a study of Front Range vertical relief.

Feeds into home projects / future adventures:

  • An altitude physiology unit using the pulse-and-symptoms log from the byway.
  • A bristlecone / dendrochronology project (continued from Mount Goliath into the broader history of using tree rings for climate reconstruction).
  • A Sand Creek / public-memorial project: how does a country mark, name, and remember atrocities? Comparison to Tulsa Race Massacre, Wounded Knee, etc.
  • Future trip: White Mountains, CA — the world's oldest known bristlecone (~4,800 years). Conceptual sequel.
  • A glacial-geomorphology unit using Summit Lake cirque as a model, extending to Rocky Mountain NP's larger cirques and arêtes.

Open questions / still to research (Chris's side)

  • Verify the 2026 timed-entry reservation policy and book ~30 days ahead for the chosen date. Reservation system has changed multiple times.
  • Confirm current byway open/close dates for 2026 (snowpack-dependent — typically late May through Labor Day).
  • Check forecast within 3 days of trip — thunderstorm risk, wind forecast at summit. Backup plan: St. Mary's Glacier or Mount Goliath only.
  • Plan the acclimation curve: 2+ nights at Denver elevation (5,280 ft), ideally one stop at Red Rocks (6,400 ft) or Dinosaur Ridge (6,000 ft) before the byway. Avoid scheduling this on day 1 or day 2 from Austin.
  • Pre-trip reading list for Maxine on the renaming + Sand Creek: Kelman's A Misplaced Massacre (assign at least the first chapter), Soule's letter, the 2023 BGN decision.
  • Decide whether to add Sand Creek Massacre NHS on the same Colorado trip (3.5 hr drive SE) or save it as a follow-up trip.
  • Decide whether to add the Argo Mine Tour in Idaho Springs (industrial-history option).
  • Confirm Echo Lake Lodge open status for our date (operations have been intermittent in recent years).
  • Pack diamox? Discuss with pediatrician if Maxine has any history of high-altitude symptoms.