Blue Hole
From ARRSEpedia
The Blue Hole is one of the great service diving destinations, along with Ragged Staff Cave, the Zenobia in Cyprus, and Scappa Flow.
The blue whole is a collapsed underwater cave and is spectacular from the air - being a near perfect dark blue circle about 400m across, and almost completely surrounded by a shallow reef. It's roughly a 3 hour trip to the blue hole from Belize in a fast boat, but is well worth it.
