Blue Hole – the most dangerous place for divers

(ORDO NEWS) -- Off the coast of Dahab in Egypt, there is a cave-like hole

Mysterious blue hole forms off Florida coast

(ORDO NEWS) -- From time to time, sinkholes appear on land, which absorb absolutely all

Scientists set off to investigate a mysterious “blue hole” off the coast of Florida

(ORDO NEWS) -- When sinkholes open up on land, it's terrible. In an instant, they