Sinkhole urban areas due to water main breaks or sewer collapses when old pipes give way. They can also occur from the overpumping and extraction of groundwater and subsurface fluids. Sinkholes can also form when natural water-drainage patterns are changed and new water-diversion systems are developed. Some sinkholes form when the land surface is changed, such as when industrial and runoff-storage ponds are created; the substantial weight of the new material can trigger a collapse of the roof of an existing void or cavity in the subsurface, resulting in development of a sinkhole. Sinkholes tend to occur in karst landscapes. Karst
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