Keywords: Great Blue Hole.jpg Das Great Blue Hole ist eine kreisrunde unterseeische Doline vor der Küste des mittelamerikanischen Staates Belize Great Blue Hole Coast of Belize - a phenomenon of Karst topography Grand Trou Bleu est un cénote sous-marin situé au large de la côte du Belize en Amérique centrale Source http //soundwaves usgs gov/2001/06/ fetched September 2006 Caption on this USGS web page was Blue Hole Aerial view of the 400-ft-deep oceanic blue hole Lighthouse Reef Atoll Blue Hole located east of Belize 2006-09 U S Geological Survey USGS no need public domain PD-USGov Photo by Chris Allnatt San Pedro Town Ambergris Caye Belize Lighthouse Reef Shapes resembling number 0 Karst topography Sinkholes Aerial photographs of Belize Belize Unusual sights of nature |