The Great Blue Hole, a submarine sinkhole off the coast of mainland Belize, yawns wide in an image captured by GeoEye’s Ikonos satellite on Dec. 8. It measures 1,000 feet wide and 400 feet deep. (Photo: GeoEye via NBC News)
The Great Blue Hole, a submarine sinkhole off the coast of mainland Belize, yawns wide in an image captured by GeoEye’s Ikonos satellite on Dec. 8. It measures 1,000 feet wide and 400 feet deep. (Photo: GeoEye via NBC News)