The Subway, United States

Spots / North America

The Subway

Utah, United StatesZion's iconic tube-shaped slot, with emerald pools and a top-down route that demands a permit and good route-finding.

Photo: Zion National Park (NPS) · Public domain, Wikimedia Commons

Grade
v3 a3 III
Level
Discovery
Season
Late spring – early autumn
Duration
Full day
Rappels
Several
Longest
9 m
Water
Cold

Few canyon photographs are as recognisable as The Subway: a perfectly tube-shaped corridor of sculpted sandstone holding chains of emerald pools. The top-down route through Zion National Park is a true canyoneering day — short rappels, cold swims and serious route-finding — and one of the most sought-after permits in the American Southwest.

Highlights

  • The famous tube-shaped 'subway' corridor
  • Glowing green pools in carved sandstone
  • A genuine permit-only wilderness route
  • A Southwest canyoneering rite of passage

The approach

The top-down route involves a steep, trail-less descent to the canyon and a long hike out — navigation skill is essential, and a permit is mandatory.

The descent

Short rappels, mandatory cold swims and down-climbs lead through the sculpted corridor. None of the obstacles are extreme, but the cold water, length and route-finding make it a committing day that rewards preparation.

Good to know

  • A wilderness permit is required and demand is high
  • Cold water; a wetsuit or dry suit is essential
  • Flash-flood risk — check the ranger forecast
Before you go. Grades and conditions change with water levels and seasons. Treat this page as orientation, not a route topo, and go with people who know the canyon or a qualified guide. Read the safety basics first.