Deep Cut Guide

Sawtooth Mountain

1 route · intrusive igneous (plutonic) (Intrusive rocks, undivided) · 12,288 ft

Help locate these routes: survey the wall

How well located

Crag only 1 

No route here has its own point yet. The map pin is the crag. At the wall? Survey it: 30 seconds per route.

Rock, from the geologic map

Intrusive rocks, undivided — intrusive igneous (plutonic). Cenozoic, about 66 to 2.6 million years old.

Dikes, sills, and small plugs; typically very fine grained or altered; composition roughly estimated from proportions of sparse to abundant phenocryst minerals. Numerous bodies with abundant phenocrysts in northwest part of map area include andesite, latite, quartz latite, dacite, or rhyolite porphyries in the form of steep-walled dikes and plugs; probably of late Oligocene age, based on age of major intrusions in this part of map area. Latite-andesite and dacite intrusions are typical near Longs Peak and to the south, where these rocks form flat-lying sheets as well as steeply dipping dikes and plugs; age may range from Eocene to latest Cretaceous, based on age of nearby major intrusions to the south (Gable, 1980). Dike at Red Deer Lake (southwest of St. Vrain Mountain) has been dated as 52.6+/-5.6 Ma (Pearson, 1980, p. 20), or early Eocene. 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: Intrusive rocks, undivided. 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. 28 historical sheets cover this crag's map point; the oldest is below.

Thumbnail of the 1915 USGS sheet covering Sawtooth Mountain
USGS 1:125000-scale Quadrangle for Longs Peak, CO 1915 · U.S. Geological Survey · 1915 · 1:125,000 sheet
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

    The whole-state sheet of the 1877 atlas, scanned at full resolution by the state survey and free to download.

    Colorado Geological Survey (publication HM-01-04) · Public domain · read it

  • Geological and geographical atlas of Colorado and portions of adjacent territory · F. V. Hayden, U.S. Geological and Geographical Survey of the Territories · 1877

    The first geology anyone drew of this ground. Hayden's survey mapped the state in the 1870s; these are the sheets, with the rock units coloured as they understood them then.

    Internet Archive (Brigham Young University copy) · Public domain · read it

  • Mountaineering in Colorado: the peaks about Estes Park · Frederick H. Chapin · 1889

    The first book of Colorado climbing. Chapin's 1887-88 ascents of Longs Peak, Hallett, Ypsilon and the Mummy Range, with the approaches as they were before the park.

    Internet Archive (Harvard University copy, Appalachian Mountain Club, Boston) · Public domain · read it

  • Trail and Timberline, volume 2 (1918) · Colorado Mountain Club · 1918

    The Colorado Mountain Club's own magazine in its sixth year, with the club's outings and ascents as its members wrote them up at the time.

    Internet Archive (Brigham Young University copy) · Public domain · read it

  • Mountaineering in the Rocky Mountain National Park · Roger W. Toll, U.S. National Park Service · 1919

    The Park Service's own mountaineering guide, four years after the park was made. Peak by peak, with the routes of the day and the first recorded ascents Toll could find.

    National Park Service, scan at the Internet Archive (Brigham Young University copy) · Public domain · read it

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.

Arapahoe Glacier · Tangen, Ed, 1873-1951 · 1921
Library of Congress, Prints & Photographs Division · Public domain · the record · indexed to this place by the archive
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Hidden as soon as you tell us, everywhere it appears, before anyone reviews it.

Arapahoe Glacier · Tangen, Ed, 1873-1951 · 1921
Library of Congress, Prints & Photographs Division · Public domain · the record · indexed to this place by the archive
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Hidden as soon as you tell us, everywhere it appears, before anyone reviews it.

Arapahoe Peaks and Glacier · Tangen, Ed, 1873-1951 · 1921
Library of Congress, Prints & Photographs Division · Public domain · the record · indexed to this place by the archive
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Hidden as soon as you tell us, everywhere it appears, before anyone reviews it.

Fair Glacier from rim of Hell Canyon, Col. · Tangen, Ed, 1873-1951 · 1921
Library of Congress, Prints & Photographs Division · Public domain · the record · indexed to this place by the archive
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Hidden as soon as you tell us, everywhere it appears, before anyone reviews it.

Routes

Photos from climbers

No photos here yet. If you're at the crag, yours would be the first.

Pick a photo from your camera roll rather than taking one here: a picture taken inside a browser usually has no location saved in it, and we check that the photo was taken at this crag before publishing it. Photos of guidebook pages and topos are refused — they're the author's work. By sending one you're letting us publish it.

Nobody reviews these before they appear, so anyone can report one and it's hidden straight away — including you, if you change your mind, and including a photographer who finds their own picture here.

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.

Sun today
sun 07:20-15:30
Wall faces S (USGS elevation). Shade from the surrounding terrain is counted.
Open sky in most directions.
Rain & forecast
No recent weather for this crag.

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

Emergency: call 911. Read out your location: Works without signal. If GPS fails, this crag's approximate map point is 40.12681 N, 105.62479 W (Sawtooth Mountain). That point can be off by hundreds of metres, so say so.

The map point for this crag is on land managed by Roosevelt National Forest (federal). It lies inside wilderness area, national forest.

The boundary is close. Land managed by Arapaho National Forest comes within 250 m of this point, and the point is not the rock — the wall itself may be on the other side of the line. Check which before you rely on either one's rules.

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

Campsite
Unnamed, 1,672 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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