Matacanes

Matacanes is the route that made canyoning popular in Mexico. Descending a limestone canyon in the Sierra Madre Oriental behind Santiago, it packs the sport's full vocabulary into one long day: swims through narrow water-carved corridors, natural slides polished by the river, jumps ranging from a couple of metres to the notorious twelve, rappels down waterfalls - the big one is around 25 metres - and a passage through the Cueva del Viento, a river cave where headlamps pick out thousands of bats overhead. The full route runs eight to ten hours including approach and exit, in wetsuits and helmets with harnesses for the rappels, and it demands genuine fitness, comfort in water and the willingness to commit to jumps once the group is past the point of return. Operators from Monterrey run it in season, usually summer through early autumn when flow is right; too little water and the slides scrape, too much and the canyon closes. Shorter routes in the same range - Hidrofobia, Chipitin - serve as gentler introductions.

What's there

• The water corridors - narrow polished passages between walls.
• The jumps - from small drops to the twelve-metre commitment.
• The waterfall rappels - descending through falling water.
• Cueva del Viento - the bat cave passage by headlamp.

When to go

June to October, when the river runs at usable levels; operators cancel when flows are dangerous. Weekday departures are smaller and faster-moving.

Practical notes

This is a serious full-day sport, not a walk: swimming ability, fitness and nerve are required, and once committed there is no exit halfway. Go only with licensed, insured operators using proper gear. Bruises and exhaustion are standard.

Nearby

Cola de Caballo's falls and Santiago's plaza sit below the range; Potrero Chico's climbing walls lie an hour west.