Onion Creek Narrows — Slickrock Slot Canyon
A tight slickrock slot canyon carved by Onion Creek, accessed via a rough dirt road 20 miles east of Moab on Highway 128. The narrows compress to shoulder-width in places, with amphitheater walls rising overhead and Fischer Towers visible from side canyons.
This trail gets almost zero foot traffic compared to anything in Arches or Canyonlands. No entrance fee, no timed entry, no shuttle. Locals treat it as a half-day escape because the drive along the Colorado River on Highway 128 is its own reward. Side canyons branch off with zero signage, rewarding explorers who push further.
From Moab, drive east on Highway 128 along the Colorado River for 20 miles. Turn right at the brown Onion Creek sign onto Onion Creek Road (gravel). Drive 4 miles in, crossing the creek multiple times (high-clearance vehicle strongly recommended). Park at the small pullout after the bridge. Hike back east but walk directly in the creek bed. No permits, no fees, BLM land.
Packing Checklist
- ☐ Sturdy hiking boots or trail shoes
- ☐ 1-2L water (no refill sources)
- ☐ Trail snacks / energy bars
- ☐ Sun protection (hat, sunscreen)
- ☐ First aid kit basics
- ☐ Map or downloaded trail (no cell service expected)
- ☐ Layers — mountain weather changes fast
Onion Creek Road itself filters out the timid. You cross the creek a dozen times before you even park, water splashing against your undercarriage, the sulfurous tang of mineral springs hitting your nose through open windows. Most people driving this road are headed to Fisher Towers or just out for a scenic loop. Almost nobody stops at the unmarked pullout four miles in.
The narrows reward that curiosity. Walls of Cutler Formation sandstone close in fast, water-smoothed and banded in reds and tans. In places the canyon pinches to three feet wide. Wading depth varies from ankle-deep to mid-calf depending on season. Side canyons open up without warning, each one a miniature amphitheater with overhanging walls and dry pour-offs.
Flash flood risk is real in monsoon season (July through September) — check weather before committing. The creek water has sulfur content from natural mineral springs upstream, so do not drink it. This spot works best paired with a stop at Fisher Towers Trailhead, just a few miles further up 128.
Sources
- BLM Moab Field Office — land management and road conditions
- Utah.com — Onion Creek — route descriptions and seasonal access