4x4 / MTB / hiking access
Poison Spider Mesa
Pick it only when the group is prepared for a longer, harder day. Send beginners toward Chicken Corners, Potash/Shafer-style scenic roads, or a guide.
Potash Road / Scenic Byway 2799/10 · Extreme16-mile 4x4 loop by BLM trailhead description · Plan most of the day with margin
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On the route
Obstacles
Source coordinates and clearly marked route estimates.
1Mile 0.69Small ledgeHard · main route2Mile 0.74Switchback ledgeSevere · main route3Mile 0.98Narrow dropHard · main route4Mile 1.15Ledge with bypassHard · optional line5Mile 2.10Prelaunch PadHard · main route6Mile 2.42WaterfallSevere · main route7Mile 2.52S-Turn Waterfall #1Severe · main route8Mile 2.59S-Turn Waterfall #2Extreme · main route9Mile 2.82The WedgieSevere · main route10Mile 4.92Multi-line ledge dropSevere · main route11Mile 5.33Big HillSevere · main route12Mile 5.64Hill climb with bypassHard · optional line13Mile 6.80Optional domeSevere · optional14Mile 8.18Sand HillHard · main route
Best for
- Experienced off-road groups
- Longer trail days with recovery margin
- Visitors linking off-road scenery with dinosaur-track and hiking stops
Do not attempt if
- The plan has a tight dinner, flight, or park-entry window
- Vehicle clearance, tires, or recovery gear are questionable
- Rain, heat, or fatigue could force a late exit