Sinkhole Sinkhole A sinkhole, also known as a cenote, sink, sink-hole, swallet, swallow hole, or doline (the different terms for sinkholes are often used interchangeably), is a depression or hole in the ground caused by some form of collapse of the surface layer. Most are caused by karst processes—for example, the chemical dissolution of carbonate rocks or suffosion processes. Sinkholes vary in size from both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may form gradually or suddenly, and are found worldwide. Sinkholes may capture surface drainage from running or standing water, but may
Collapse into Now Collapse into Now Collapse into Now is the 15th and final studio album by the American alternative rock band R.E.M., released on March 7, 2011, on Warner Bros. Produced by Jacknife Lee, who previously worked with the band on "Accelerate" (2008), the album was preceded by the singles, "It Happened Today," "Mine Smell Like Honey", "Überlin" and "Oh My Heart". Regarding the album's title, lead singer Michael Stipe noted, "It's the final thing I sing, the last song on the record before the record goes into a coda and reprises the first song. In my head, it's like I'm addressing