PR9 · North — Santana

Levada do Caldeirão do Inferno

Also known as PR9 extension · Hell's Cauldron · colloquially 'PR9.1'

17.4 km Length out-and-back
6.5 h Duration typical
Hard Grade hard
250 m Ascent climb
high Exposure vertigo
PR9 Trail official PR

Not a separate trail but the full extent of the official PR9: from Caldeirão Verde the channel pushes a further ~2.4 km through a string of narrow, often flooded tunnels into the Caldeirão do Inferno, a sheer-sided canyon closed by a final towering waterfall. This is the demanding end of the route — guidebooks count around eleven tunnels in total and rate the complete out-and-back as hard, a full day of 6–7 hours or more. The popular shorthand 'PR9.1' for this extension is a misnomer: the official register names the whole Queimadas–Caldeirão Verde–Caldeirão do Inferno line as PR9, while the real PR9.1 is a short accessible path (Queimadas–Pico das Pedras) elsewhere.

Highlights

  • Continuation of PR9 beyond Caldeirão Verde into a sheer-walled canyon
  • One of the most adventurous full-day levada hikes on the island
  • Raw, untouched interior Laurisilva and basalt cliffs

Water on the route

  • Caldeirão Verde waterfall (~100 m)
  • Caldeirão do Inferno canyon and its towering final waterfall
  • deep ravine gorges of the levada
Tunnels: ~11 tunnels in total over the full route (4 to Caldeirão Verde, then more, narrower and frequently flooded, on the Inferno section; some over 200 m) — torch essential. Bring a head-torch — some levada tunnels are long, low and pitch black.