Ernst Ridge Trail
What to Expect
Safety Advisory
Heat is the primary hazard here, not terrain. Big Bend's eastern desert regularly exceeds 100 degrees by late morning from April through October. Turnaround without hesitation if you feel dizzy, stop sweating, or your pace drops unexpectedly — heat illness in a remote canyon with no cell service is a serious situation.
The trailhead access road is unpaved and can be impassable after rain. Check road conditions at the visitor center before committing to the drive, and know that help is far away if your vehicle gets stuck.
Trail Details
- 1
Start before sunrise — the eastern Big Bend desert heats to dangerous temperatures by mid-morning, and the ridge offers zero shade. A 5:30am start gives you cool air for the climb and golden light on the Sierra del Carmen at the top.
- 2
Carry at least a liter per mile — there is no water anywhere on this trail, and the dry desert air will dehydrate you faster than you expect. Four liters minimum for two people on a cool day; more in any weather above 70 degrees.
- 3
The best photography is from the rim looking southeast toward the Sierra del Carmen in late afternoon light, but given the heat constraints, morning light on the canyon below the ridge is almost as good and far safer to chase.
