Solution weathering of the limestone results in a "Bahamian Karst" topography. This includes potholes, blue holes such as Dean's Blue Hole, sinkholes, beachrock such as the Bimini Road ("pavements of Atlantis"), limestone crust, caves due to the lack of rivers, and sea caves. Several blue holes are aligned along the South Andros Fault line. Tidal flats and tidal creeks are common, but the more impressive drainage patterns are formed by troughs and canyons such as Great Bahama Canyon with the evidence of turbidity currents and turbidite deposition.