The dive site Finlay’s Deep or Mont Blanc is an offshore rocky reef in the Castle Rocks restricted area on the False Bay coast of the Cape Peninsula, near Cape Town in the Western Cape province of South Africa.

• About 900 m directly offshore of Finlay’s point

This site is in a Marine Protected Area (2009). A permit is required. The site is entirely inside the Castle Rocks Restricted Zone.

These areas are situated along the South African Coast and are accessible to the public and are known dive locations to the locals from in and around the area, please respect their local fauna and flora, remember limit your catch and don’t catch your limit.