Sandthrax Canyon
verified 2026-05-12
ACA 4A
Moderate flood risk
Hanksville, UT
Fourth Irish slot. Notoriously difficult, fatalities have occurred. Smooth crumbly rock and tight squeezes.
Not for casual hikers under any circumstances.
Logistics
| Manager | BLM Hanksville / Henry Mountains Field Station |
|---|---|
| Permit | No permit or fee required for day-use or technical canyoneering. Dispersed BLM land managed by the Hanksville Henry Mountains Field Station. No developed facilities at the trailheads; pack out everything, no water, no toilets. Contact (435) 542-3461 for current conditions. |
| Distance | Short |
| Elevation | ~500 ft |
| Time | 6-10 hr |
| Technical | 4A III X. Aid climbing, advanced stemming. Expert only. |
| Season | Spring, fall |
| Flood risk | Moderate |
| Vehicle access | Sandthrax Campground |
| Crowd | Very low |
| Coordinates | 37.945, -110.47 |
Sources
- field office: https://www.blm.gov/office/henry-mountains-field-station
- robbers roost: https://www.blm.gov/visit/robbers-roost-dirty-devil
- north wash map: https://www.blm.gov/sites/blm.gov/files/uploads/BLMUtahNorthWashMap.pdf