A sinkhole was a hollow area in the ground. Sinkholes were a feature of Karst topography. The duck blind on Mintaka III was surrounded by sinkholes, among other features. (TNG: "Who Watches The Watchers") Certain spatial phenomena were also described as sinkholes. (VOY: "Gravity", "The Fight") See alsoEdit Spatial sinkhole Subspace sinkhole External linkEdit Sinkhole at Wikipedia Retrieved from "https://memory-alpha.fandom.com/wiki/Sinkhole?oldid=2219317" Categories: Landforms Add category Cancel Save Community content is available under CC-BY-NC unless otherwise noted.