الثلاثاء، 17 فبراير، 2015

The Mysterious Belize Great Blue Hole


The Mysterious Belize Great Blue Hole

The Mysterious Belize Great Blue Hole is a large underwater hole off the coast of Belize. It lies near the center of Lighthouse Reef, a small atoll 100 kilometers (62 mi) from the mainland and Belize City. The hole is perfectly circular in shape, over 300 meters (1000 ft) across (diameter), 3140 feet circumference and 125 meters (410 ft) deep. It was formed as a limestone cave system during the last glacial period when the sea level was 400 to 500 feet below present time and was dry land. Last glacial period began about 120,000 years ago and end about 15,000 years ago

0 التعليقات:

إرسال تعليق