Entry No. 23 — the Grand Junction file — filed under: outdoor
Unaweep Canyon
“Every canyon on Earth drains one way — except this one.”
Every canyon on Earth drains one way — except this one. Unaweep flows out both ends: East Creek to the Gunnison, West Creek to the Dolores, parting at a divide so flat you will cross it without noticing. Both creeks are far too puny to have cut a gorge half a mile deep, and geologists still argue over which ancient river did the digging and why it left. At mile 129, the 1918 Driggs Mansion stands roofless under Thimble Rock; the owner's wife lasted months before fleeing the silence.
The story
Every canyon on Earth follows a basic law of physics: water runs downhill from a single source toward a single exit. Unaweep ignores that entirely. Translated roughly as the 'Canyon with Two Mouths,' this half-mile-deep granite trench drains out both ends. East Creek trickles east into the Gunnison River, while West Creek trickles west into the Dolores. The punchline is that both streams are laughably small—completely incapable of carving a gorge this massive. Geologists still argue over which ancient river originally cut the path and why it up and abandoned the bedrock.
At mile marker 135 along Highway 141, you'll cross the Unaweep Divide—a watershed split so flat and subtle you will roll right over it without noticing the water just switched direction. Six miles back, at mile marker 129, sits the roofless sandstone shell of the 1918 Driggs Mansion crumbling beneath Thimble Rock. The owner's wife lasted only a few months out here before the crushing canyon silence drove her back to civilization. Looking at the bare stone window arches framed against sheer rock walls, it isn't hard to see why.
What it's like
The canyon swallows Highway 141 almost immediately as you head south from the US-50 junction at Whitewater. Vertical granite walls bracket the road, and you'll often see trad climbers tackling multi-pitch crack routes high on the rock faces. Your main roadside pullout is at mile marker 129, where signed interpretive panels explain the Driggs ruin. Do not hop the fence: the ruin and the canyon floor are private ranch land protected under a conservation easement, so shoot your photos from behind the wire. Top off your gas tank in Grand Junction before leaving town—there isn't a single fuel pump along the 45-mile stretch between Whitewater and Gateway.
The move: Drive CO-141 south from Whitewater, dare each other to call out the exact moment you cross the divide, then pull off at the mile-129 overlook and study the Driggs ruin under Thimble Rock.
📍 Before you go Pick up CO-141 at the US-50 junction in Whitewater and the canyon swallows the road almost immediately; the Driggs Mansion overlook is a signed pullout with interpretive panels near mile marker 129, and the barely perceptible Unaweep Divide sits near mile 135. The ruin and the canyon floor are private ranch land under conservation easement, so view and photograph from the pullout rather than hopping the fence. There is no fuel between Whitewater and Gateway, roughly 45 miles, so top off in Grand Junction. Turn around at the divide for a half-day outing, or continue to Gateway at the far mouth and come back along the Dolores.
- 📍 Whitewater
- 💸 Free
- ⚡ Up for anything
- 🌗 Outdoors
Where: CO-141 between Whitewater and Gateway (canyon mouth at the US-50/CO-141 junction), Whitewater, CO 81527
Hours: Added 2026-06-11 — confirm current hours before you go.
Pair it with
- Atomic Legacy Cabin — Pair a canyon with an unresolved geologic past with Grand Junction's secret Manhattan Project supply cabin tucked behind Orchard Mesa.
- Colterris Winery Barrel Cave — Swap a natural half-mile-deep granite gorge for a man-made barrel cave bored directly into a hillside.
- Scallywags Bar and Grill — Head back toward Orchard Mesa after the quiet canyon drive to play pinball over a cold drink.
- Orchard Mesa Lanes — Follow up the silent, eerie expanse of the canyon with the noise and lights of an old-school 1980s bowling alley.
Good to know
What makes Unaweep Canyon geologically weird?
It drains out both ends instead of one. East Creek flows toward the Gunnison River while West Creek flows toward the Dolores River, divided by a high point so flat you cross it without noticing. Neither creek is anywhere near large enough to have carved the canyon.
Can you walk up to the Driggs Mansion ruin?
No. The 1918 roofless stone mansion sits on private ranch land under a conservation easement. You can view and photograph it from the signed roadside overlook near mile marker 129.
Are there gas stations along Highway 141 in the canyon?
No. There is no fuel along the roughly 45-mile stretch between Whitewater and Gateway. Fill up in Grand Junction before starting the drive.
How do I spot the Unaweep Divide?
Track your mile posts toward marker 135 on Highway 141. The divide marks the high point where the watershed splits, but the floor is so level that you won't feel any noticeable climb or drop as you pass it.
Plan a visit & invite your people →
Further reading: Wikipedia · cpr.org · coloradoencyclopedia.org · cowestlandtrust.org · visitgrandjunction.com · mountainproject.com
last checked: 2026-06-11