Earth, Space, Tech, Animals, History, Adventure, Human, Autos


Follow on Facebook

Follow on Twitter


Posts tagged adenture

Vertical Caves: Exploring Blue Holes

Tourists and hard-core adventurers are attracted to underwater caves around the world, some hundreds of feet deep. Free divers sink into the darkness without supplemental oxygen for record-breaking dives. Above, the Blue Hole in Belize Barrier Reef. Open gallery…