Roaring Fork Boulders
5 boulder problems · unconsolidated (Till of Pinedale age) · 9,007 ft
What's here
V2 to V6, with no single grade dominating.
Counted from the 5 climbs here that carry a grade. Shown only where there are at least 5 of them — below that the shape is noise.
How well located
Base placed (one source) 1 Position on wall known 4
The order of the climbs along this wall is known from the open catalogue, so a few surveys go a long way: standing at Hawaiian Sit Start, Howzit Hawk (2 climbs, about 60 seconds on Hawaii Boulder) would place up to 2 more climbs between them. Survey the wall →
“Up to” because the estimate between two surveyed routes is only used when they turn out to be close enough together on the ground.
Rock, from the geologic map
Till of Pinedale age — unconsolidated. Late Pleistocene, younger than 126,000 years.
Subangular to subrounded boulders, cobbles, and pebbles set in a sandy silt to silty sand matrix. Prominent, sharp-crested moraines are numerous; rugged knob-and-kettle topography is well developed in some areas. Gullying is negligible. Moraine-dammed lakes, swamps, and perennial kettle-hole ponds are abundant. Most soils (A and B horizons only) are 45-75 cm thick. Less than 5 percent of stones in B horizon are rotted. Description from Gable and Madole (1976). Patterned lines within unit indicate trend of lateral and terminal moraines. Pinedale glaciation probably began in the region more than 35,000 years ago, and occurred in several pulses. Last major advance of Pinedale glaciers approached its maximum about 22,000 years ago, and these glaciers began to recede from their terminal moraines between 13,000 and 15,000 years ago. Most Pinedale glaciers were probably gone by 10,000-11,000 years ago (age data from Madole and Shroba, 1979, pages 128-129). GRI Source Map ID 141 (I-1973).
This is the map unit under this crag's map point, read from the 1:100,000 sheet (National Park Service Geologic Resources Evaluation program, 2006, National Park Service). The point can be a few hundred metres from the rock, a cliff often stands on the line between two units, and at that scale a line on the map is about 100 m wide on the ground, so the wall itself may be the neighbouring unit. Every crag on this unit: Till of Pinedale age. Geology data: Macrostrat (CC BY 4.0), serving USGS and Colorado Geological Survey maps.
On the map since 1915
The USGS has mapped this ground since 1915. 26 historical sheets cover this crag's map point; the oldest is below.
USGS Historical Topographic Map Collection · Public domain · the record · placed by its coordinates
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Hidden as soon as you tell us, everywhere it appears, before anyone reviews it.
Public domain, U.S. Geological Survey. The sheet shows the ground as the survey found it then, which is why a trail or road you know may be missing. Every sheet over this point, 1915 to 1984: USGS topoView.
In print since 1877
1877 Geologic Map of Colorado (Hayden), high-resolution scan · F. V. Hayden; scan by the Colorado Geological Survey · 1877
Geological and geographical atlas of Colorado and portions of adjacent territory · F. V. Hayden, U.S. Geological and Geographical Survey of the Territories · 1877
Mountaineering in Colorado: the peaks about Estes Park · Frederick H. Chapin · 1889
Trail and Timberline, volume 2 (1918) · Colorado Mountain Club · 1918
Mountaineering in the Rocky Mountain National Park · Roger W. Toll, U.S. National Park Service · 1919
Free to read: public domain or government work. About Alpine Rock as a whole, not this wall. More in the reading room.
From the archives
Photographs of this area held by the Library of Congress, oldest first. Every one carries the Library's own "no known restrictions on publication"; anything else is left out.
Library of Congress, Prints & Photographs Division · Public domain · the record · indexed to this place by the archive
Report this item
Hidden as soon as you tell us, everywhere it appears, before anyone reviews it.
Library of Congress, Prints & Photographs Division · Public domain · the record · indexed to this place by the archive
Report this item
Hidden as soon as you tell us, everywhere it appears, before anyone reviews it.
Library of Congress, Prints & Photographs Division · Public domain · the record · indexed to this place by the archive
Report this item
Hidden as soon as you tell us, everywhere it appears, before anyone reviews it.
Library of Congress, Prints & Photographs Division · Public domain · the record · indexed to this place by the archive
Report this item
Hidden as soon as you tell us, everywhere it appears, before anyone reviews it.
Routes
Hawaii Boulder
- 1 Hawaiian Sit Start V6
- 2 Hawaiian Alpine Start V5
- 3 Ripped Dolphin V4
- 4 Howzit Hawk V2
Three Finger Boulder
- 1 Three Finger Mono-pocket V2
Photos from climbers
No photos here yet. If you're at the crag, yours would be the first.
Taken at the crag by climbers and published as they sent them. Each one's own location had to be within 0.5 km of this crag before we accepted it. See something that shouldn't be here? Use Report this photo under it and it's hidden at once. Anything else, write to us.
Conditions reported
Nothing reported recently.
Report what you see
Reports are dated and fade on their own: wet rock after 3 days, a bad bolt after a year. No names, no text.
Access & safety
The map point for this crag is on land managed by Arapaho National Forest (federal). It lies inside research natural area, wilderness area, national forest.
Land manager from USGS PAD-US (public domain), read 2026-09-29. It is the manager of the crag's map point, which can be a long way from the wall. What you may do on the rock is the manager's to say, not ours.
Rules for all Arapaho and Roosevelt National Forests land
- Fees
- No entrance fee for the forest. Some locations require a reservation, pass, permit or day-use fee.
- Overnight
- Camping more than 14 days in a 30-day period, or more than 30 days in a 365-day period, is prohibited across the forests and the Pawnee National Grassland. Dispersed camping is within 300 feet of most Forest Service roads, on National Forest land; the MVUM shows which.
Read on Arapaho and Roosevelt National Forests's own pages, checked 2026-09-29 by John Crawford. What they require, in full, or their own climbing page. These apply to the manager's whole holding; anything specific to this crag is above.
Nearby, from OpenStreetMap
- Toilets
- 817 m away (map)
- Campsite
- Arapaho Bay, 1,788 m away (map)
Distances are a straight line from this crag's map point, which can itself be hundreds of metres off; a road may be much longer. Mapped by OpenStreetMap contributors (ODbL), so a toilet missing here may simply be unmapped. Parking here is what OSM has drawn nearby, not a guidebook's directions.
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