This is a spectacular dive down from a low rocky shelf at 6m, where the dive boat anchors. You start the dive at the entrance to a chimney, which drops down and through the limestone plateau and exits at 16m. The tunnel is wide enough for divers to manoeuvre without touching the sides. Here you will find white-tufted worms (Protula tubularia) and lots of fireworms (Hermodice carunculata). The gravel base at the mouth of the cavern has a small group of purple heart urchins (Spatangus purpureus). Spiny starfish (Marthasterias glacialis) are common on the massive outer boulders that drop down into the depths. These boulders have also created huge caverns and swimthroughs making this a fascinating dive .

Location:

On the southern side of the light on the southwest point of Comino.

Access:

By boat.

Conditions:

Exposed and can be difficult unless the weather is perfect.

Average depth:

18m

Maximum depth:

beyond 50m

Average visibility:

beyond 30m