Blue Hole (Red Sea)
The Blue Hole is a diving location on the southeast Sinai, a few kilometres north of Dahab, Egypt on the coast of the Red Sea.
Ross' Hole
Ross' Hole (Salish: K͏ʷtíɫ P̓upƛ̓m̓ ("big open or big clear area"), also Sk͏ʷtíɫ X̣súlex͏ʷ ) is a valley located in Ravalli County, in Sula State Forest, along U.S. Route 93 in the vicinity of the hamlet of Sula, Montana.