FirefinderFire lookouts of the US

Fire lookout · Whatcom County, Washington

Sourdough Mountain Lookout

1933 L-4 lookout replacing a 1917 cupola cabin, famous as the post where poets Gary Snyder and Philip Whalen worked in the 1950s.

Visit & stay

Not rentable. As far as we know, this lookout cannot be booked for overnight stays.

Access

Open to the public. North Cascades National Park, reached by approx. 5-mile trail; not a rental, visited frequently by hikers

Can you climb it?
No
Road to the top?
No, you have to hike
Trail
about 5 miles from trailhead to the cabin
Staffing
Staffed during fire season

Facts

Status
Standing
Type
Ground-level cabL-4 groundhouse, 14.25 ft square, rock foundation, shiplap siding, wood-shingled hip roof, diagonally braced plywood shuttersThe designs: L-4, Cupola house
Built of
Wood
Height
Unknown
Elevation
5,905 ft (1,800 m)
Agency
National Park Service
Land
Federal land
Location
Whatcom County, Washington
Coordinates
48.74253, −121.10929
This entry
VerifiedResearched, then checked independently. Updated 8 Oct 2026.
Firefinder id
us-wa-sourdough-mountain

View from the cab

What you see from the cab: every ridge out to about 93 miles, the named peaks in sight, and other fire lookouts within view, worked out from terrain data in your browser.

Downloads about 4.3 MB of terrain data the first time.

Or see what it could see on the map: the ground in its line of sight.

History

Then and now

  1. 1917 Builtoriginal cupola-style lookout cabin built under Mt. Baker National ForestSource: nhlr.org
  2. No record between 1917 and 1933
  3. 1933 Replaced by a new structure1917 cupola torn down and replaced with current L-4 groundhouse, built by the CCCSources: en.wikipedia.org, nhlr.org
  4. No record between 1933 and 1953
  5. 1953 Staffedpoet Gary Snyder staffed the lookout summer 1953, inspiring two of his poemsSource: en.wikipedia.org
  6. 1955 Staffedpoet Philip Whalen staffed the lookout after Snyder was not rehired; wrote poem 'Sourdough Mountain Lookout'Source: en.wikipedia.org
  7. 1967 Eventtransferred from Forest Service to National Park Service when North Cascades National Park was created by CongressSource: nhlr.org
  8. No record between 1967 and 1989
  9. 1989 Listed on the National Register of Historic Placesadded to NRHP February 10, 1989Source: en.wikipedia.org
  10. 1997 Added to the National Historic Lookout RegisterDate registered per NHLR detail page: April 28, 1997Source: NHLR register entry
  11. No record between 1997 and 2023
  12. 2023 Firewrapped in fire-proof material in August 2023 due to the nearby Sourdough FireSource: en.wikipedia.org
  13. TodayStandingIt still stands, as far as our sources know.

Old maps of this spot

USGS topographic maps from the years a lookout stood may show it, often as a small symbol labelled “Lookout”. See the old topo maps around it on the Firefinder map, or find every scanned sheet of this spot on USGS TopoView (click the spot there to list them, with dates and downloads).

Story

Researched 4 Oct 2026, fact-checked.

A fire lookout first went up on Sourdough Mountain in 1917, a cupola-style cabin built during the Mt. Baker National Forest era.1 That structure didn't last: the Civilian Conservation Corps tore it down and replaced it in 1933 with the L-4 groundhouse that still stands today, a 14.25-foot-square cab on a rock foundation, shiplap-sided and topped with a wood-shingled hip roof, with diagonally braced plywood shutters that swing open on each side for observation.2,1

The mountain stayed under Forest Service control until 1967, when Congress created North Cascades National Park and the lookout was transferred to the National Park Service.1 It's best known today for who worked there in the 1950s: poet Gary Snyder staffed it in the summer of 1953, an experience that fed directly into his poem "Mid-August at Sourdough Mountain Lookout" and later "August on Sourdough, A Visit from Dick Brewer."2 Two years on, the Forest Service wouldn't rehire Snyder for another season, so his friend and fellow poet Philip Whalen took the post instead, writing his own well-known poem about the job, "Sourdough Mountain Lookout."2

The lookout was added to the National Register of Historic Places on February 10, 1989.2 Unlike many of its contemporaries it was never abandoned to the weather — the National Historic Lookout Register describes it as continuing in active service, and the Fire Lookout Museum says it's staffed every summer.1,3 In August 2023, crews wrapped the structure in fire-resistant material as the nearby Sourdough Fire burned close by, a precaution rather than a sign of damage.2

It's a popular hike, reached by a roughly 5-mile trail up from the trailhead, and it isn't set up as a rental.2,1 Because it's an active, sometimes-staffed Park Service lookout, visitors should admire it from outside rather than letting themselves in.

  1. Sourdough Mountain Lookout, National Historic Lookout Register, http://nhlr.org/lookouts/us/wa/sourdough-mountain-lookout/ (accessed 2026-10-04). ↩
  2. Sourdough Mountain Lookout, Wikipedia, https://en.wikipedia.org/wiki/Sourdough_Mountain_Lookout (accessed 2026-10-04). ↩
  3. Sourdough Mountain Lookout, firelookout.com (Fire Lookout Museum / Jennifer M. Weldon), https://www.firelookout.com/wa/sourdough.html (accessed 2026-10-04). ↩

Photos

Photo of Sourdough Mountain Lookout
Photo: National Historic Lookout Register (nhlr.org) · All rights reserved · source
Photo of Sourdough Mountain Lookout
Photo: John Scurlock, via National Historic Lookout Register (nhlr.org) · All rights reserved · source
Sourdough Mtn. in 1921
Sourdough Mtn. in 1921 (1921)Photo: the Fire Lookout Museum and Jennifer M. Weldon, via firelookout.com · source
Sourdough Mtn. L.O.
Sourdough Mtn. L.OPhoto: the Fire Lookout Museum and Jennifer M. Weldon, via firelookout.com · source
Photo of Sourdough Mountain Lookout
Photo: R Seifried, via Wikimedia Commons · Public domain · source
Photo of Sourdough Mountain Lookout
Photo: TrailChick Washington lookout guide (trailchick.com) · source

Photos keep their own rights and are shown with credit. Is one of these yours? You can ask for a different credit or for removal.

Where sources disagree

We show disagreements between sources instead of quietly picking one. If you know which is right, please tell us.

  • Sources disagree on the year it was built.

    • firelookout.com -- Rex Kamstra's Forest Fire Lookout Page: 1917
    • Wikidata: 1933
    • OpenStreetMap: 1933
    • TrailChick: Washington State Fire Lookouts: 1933

    Sources give different build years. Often one counts the first lookout on the site and another the structure there now.

Sources

  1. National Historic Lookout Register (NHLR) Gave us: name, location, county, elevation, register numbers, agency, ownership, dates, photos, links National Historic Lookout Register (nhlr.org) · All rights reserved (American Resources, Inc.); facts extracted only, no prose copied. · retrieved 4 Oct 2026
  2. Forest Fire Lookout Association (FFLA) - US lookout lists Gave us: type, status, register numbers, links Forest Fire Lookout Association (firelookout.org) · No licence stated; facts extracted only, no prose copied. · retrieved 8 Oct 2026
  3. firelookout.com -- Rex Kamstra's Forest Fire Lookout Page Gave us: design, staffing, dates, photos, links firelookout.com · No licence stated on the site; facts only (coordinates, elevation, built/destroyed years, design, agency). Photos mirrored with the site's stated credit. · retrieved 4 Oct 2026
  4. Wikidata -- US fire lookout towers (Q748998 and subclasses) Gave us: register numbers, photos, links Wikidata · CC0 1.0 (Wikidata). Images keep their own Commons licence/credit. · retrieved 4 Oct 2026
  5. OpenStreetMap -- fire lookout structures Gave us: what it is built of, register numbers, access, links © OpenStreetMap contributors · ODbL 1.0. (c) OpenStreetMap contributors. · retrieved 4 Oct 2026
  6. FOREST LOOKOUTS -- western US (Ron Kemnow's weebly sites) Gave us: links Ron Kemnow's Forest Lookouts sites (westlookouts, californialookouts, idaholookouts, montanalookouts, oregonlookouts and washingtonlookouts .weebly.com) · No licence stated; facts only (county, land manager, status word, coordinates where the page's own map widget gives them, township-range-section, height and design hints, links). The site's own newspaper quotes, citations and narrative are not reproduced. · retrieved 8 Oct 2026
  7. TrailChick: Washington State Fire Lookouts Gave us: photos, links TrailChick (trailchick.com) · No licence stated; facts only (county, land manager, coordinates, elevation, lookout type, years built). The guide's text is not reproduced; its card photos are listed with credit to TrailChick, for the project's photo mirroring. · retrieved 8 Oct 2026
  8. WillhiteWeb.com: Washington Fire Lookouts Gave us: links WillhiteWeb.com · No licence stated; names and page links only (the site's photos and text are not reproduced). · retrieved 8 Oct 2026
  9. Firefinder research Gave us: summary, design, status, agency, access, visiting details, dates, links, fact-check Firefinder research (sources cited in the story footnotes) · Our own research notes; each fact cites its source in the lookout's story

More about this lookout elsewhere

Firefinder takes facts (places, dates, numbers) from these sources and writes its own words. See all sources and licences.