Blue Holes

"A blue hole is a cave (inland) or underwater sinkhole. They are also called vertical caves .....Blue holes are roughly circular, steep-walled depressions, and so named for the dramatic contrast between the dark blue, deep waters of their depths and the lighter blue of the shallows around them." (Wiki - see )

Connected Sites

Site Rationale Link
Belize Barrier Reef Geat Blue Hole near Ambergris Cay
Great Barrier Reef Pompey hardline reef complex - Barrier Star Blue hole and Crystal Blue hole
Rock Islands The Blue holes dive site is situated in the Ngemelis islands


Do you know of another WHS we could connect to Blue Holes?

Send it to me!

A connection should:

  1. Not be "self evident"
  2. Link at least 3 different sites
  3. Not duplicate or merely subdivide the "Category" assignment already identified on this site.
  4. Add some knowledge or insight (whether significant or trivial!) about WHS for the users of this site
  5. Be explained, with reference to a source