The Blue Hole is located just off of the coast of Belize, near the Ambergris Cave. The Blue Hole began as a limestone cave in our last Ice Age. After ages of erosion the cave collapsed leaving the scenic beauty we see today! The Blue Hole is almost perfectly circular reaching 300m (1000ft) across and 120m (400ft) deep. The blue cave is perfect spot for all divers because of its beauty and geological history.