Slot Canyon Atlas

AtlasChiapas

El Chorreadero

verified ACA 3C High flood risk Chiapa de Corzo, Chiapas

An underground river through one of Chiapas's largest cave systems: about 26 rappels, jumps, slides, and tunnel swims through chambers 30 to 100 ft high.

This is a river cave, not a slot in the dry-canyon sense, but ropewiki tracks it as a canyoneering descent (river-cave variant). Included because the morphology (narrow water-cut passages, mandatory rappels, swims) is functionally the same as a wet slot. Commercial guide operator Explora Ecoturismo runs short tours from the bottom. Headlamps mandatory. Multiple chambers, calcite flowstone formations, and three large rooms en route.

Logistics

ManagerLocal ejido and commercial concession (entrance fee structure). No federal protected area listing.
PermitNo formal permit required. Entrance fee at the commercial trailhead, roughly 1,000 MXN per person as of early 2025; negotiable. Open 8am to 6pm at the commercial entrance.
Distance2.2 mi through trip
Elevation~1,000 ft loss
Time6-12 hr full descent; 4-6 hr short commercial route
TechnicalRopewiki rates the full descent 3C III (v3a4 III). 26 rappels, up to 60 ft, plus about a dozen jumps to 25 ft (one closer to 30 ft) and 3 toboggans 8 to 15 ft. Long sections through underground river passages with extended underwater swims. Single bolt anchors throughout, so backup the first rappeller and let the last person remove the backup.
SeasonDec to Mar best (dry). Avoid Jun onward as monsoon spikes hit fast.
Flood riskSevere. River cave with no high ground for refuge. Hypothermia and hydraulic risk at flow. The history of broken ribs, ankles, and legs is documented in the community trip reports.
Vehicle accessPassenger vehicle suitable. 20 minute shuttle for the full route. Hire a local driver (200 to 500 pesos) rather than leaving a car at the upper put in.
CrowdRoughly one group per year does the full integral independently. The lower commercial section sees high tourist traffic.
Coordinates16.7549, -92.9716

Sources