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.
Jackson Hole
Jackson Hole is a valley between the Teton Mountain Range and the Gros Ventre Range in Wyoming sitting near the border of Idaho. The term "hole" was used by early trappers or mountain men, who primarily entered the valley from the north and east and had to descend along relatively steep slopes, giving the sensation of entering a hole. These low-lying valleys surrounded by mountains and containing rivers and streams are good habitat for beaver and other fur-bearing animals.