Silfra Cathedral

The signature section: a fissure roughly 100m long that can often be seen from one end to the other. This is where the visibility claim is most legible.

Depth

5–18m

Current

Mild

Diver level

Open water

Entry

Boat

Unique features

  • Roughly 100m long and often visible end to end from the surface
  • Deepest point of the recreational route, around 18–20m by the park cap

Sources & last checked

Checked July 2026

This is a researched draft, not yet human-verified. The seasonality and logistics are drawn from the sources below — confirm specifics (permits, fees, closures) with an operator before you book.

Note on the data: Coordinates are approximate; not surveyed dive-site GPS.