Poison Canyon Road to El Malpais — Zuni-Acoma Lava Field Desert Rim via Cebolita Mesa
Lava field rim run in the New Mexico badlands.
El Malpais — Spanish for ‘the badlands’ — is exactly that: a 40-mile-long lava flow frozen in mid-pour, and Poison Canyon Road cuts along its eastern sandstone rim through Cibola National Forest before dropping toward the monument’s backcountry. Starting near Grants off NM-117, this route winds through juniper and piñon scrub atop Cebolita Mesa, where panoramic views open across the obsidian-black basalt below toward the Zuni Mountains. The two-track through here is a slow, wash-corrugated grind that rewards patience — particularly near the narrows where the sandstone rim drops sharply toward the lava tubes below. La Ventana Natural Arch, one of the largest accessible natural arches in New Mexico, sits off a short spur and is worth every minute of the detour.
High clearance is a must; the corrugated two-track and embedded sandstone ledges are hard on stock rigs but nothing that demands lockers on most of the run. A lifted half-ton or a proper 4×4 wagon is the sweet spot. Spring and fall are the play — summer thunderstorms turn the clay sections into a skating rink, and winter can bring deep drifts on the mesa top. No permit required for the national forest sections, but check the NM-117 corridor road status with the El Malpais visitor center. Carry all your water — there’s none out here. Cell service is essentially zero.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Backcountry, High Clearance, Overland Route |
| Surface | Dirt, Gravel, Rock |
| Features | Camping, Historic, Remote, Scenic |
| Length (miles) | 28 mi / 45.1 km |
| Duration | 1-2 days |
| Max elevation (ft) | 7400 ft |
| Best season | April-June, September-November |
| Minimum vehicle | High-clearance 4WD |
| Nearest town | Grants, NM |
| Land manager | Cibola National Forest / El Malpais National Monument (BLM) |
| Permit required | No |
| Cell service | None |
| Water crossings | No |
| Dispersed camping | Yes |
| Official sources | Cibola National Forest El Malpais NPS Visitor Info |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a lifted Tacoma or stock 4Runner handle this trail, or do I need a dedicated build?
A stock high-clearance 4WD like a 4Runner, Tacoma, or Wrangler is the minimum — this is rated moderate, but the rocky sections on Cebolita Mesa and loose volcanic rock near the lava field rim will punish low-clearance rigs. Lockers aren't required, but all-terrain tires are strongly advised over street rubber.
When does the trail become impassable, and is it accessible in winter?
Best windows are April–June and September–November. Winter can bring snow and mud that turns the dirt sections into axle-deep mess, and the clay-heavy stretches near the mesa won't forgive you when wet. Summer monsoon season (July–August) can wash out sections with little warning.
Do I need a permit to drive this route or camp out here?
No permit is required to drive Poison Canyon Road or camp dispersed on the Cibola National Forest sections. If you're poking into El Malpais National Monument boundary areas, check with the BLM field office in Grants — some zones have specific use rules, and you can't just camp anywhere inside the Monument proper.
What's the hardest section and what should I actually expect?
The roughest stretch is along the lava field rim on Cebolita Mesa — sharp volcanic basalt edges can shred sidewalls if you're sloppy with your line, and there are embedded rock sections that require deliberate tire placement. It's not a white-knuckle trail, but complacency will cost you a tire.
How far is the nearest gas from the trailhead, and is there any water on route?
Grants, NM is your last fuel stop — top off there, it's roughly 20–25 miles to the start and there's nothing on-route for 28 miles of backcountry. There is no reliable water on this trail; bring everything you need in, including enough for your radiator if temps are running hot.
Trail track
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