This is a spectacular dive in good visibility, and large numbers of fish may be seen. Outer Castle is structurally, topographically, geologically, and by most other considerations part of the same reef, but was historically considered a separate site. The southern part of the site was known by the name “Pie Rock” before 2004. The sections were named after mapping started and eventually it became obvious that Outer Castle is the northern part of the Pie Rock reefs,

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.