WList of sinkholes
WNational Corvette Museum
WBayou Corne sinkhole
WBig Basin Prairie Preserve
WBlue Hole (Castalia)
WBlue Hole (New Mexico)
WBottomless Lakes State Park
WCedar Sink
WDaisetta, Texas
WDeep Run Ponds Natural Area Preserve
WDevil's Sinkhole State Natural Area
WGrassy Cove
WLake Peigneur
WMakauwahi Cave
WMarvel Cave
WMontezuma WellWMount Joy Pond Natural Area Preserve
WPeter Sinks
WTrout Pond