Silfra Big Crack

The entry section and the narrowest part of Silfra, where the fissure walls close in to roughly arm's span. Park rules cap the dive at 18m throughout.

Depth

3–18m

Current

Mild

Diver level

Open water

Entry

Boat

Unique features

  • The narrowest section of the fissure — divers can reach out toward both walls at once
  • First section on the standard route, entered from the platform steps

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.