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
A Leap in the Dark the Void" is a film about people who are out of control made by a director who's in as close to total control as a moviemaker is ever likely to be..there's greatness in it." A Leap in the Dark A Leap in the Dark (, and also known as "Leap Into the Void") is a 1980 Italian film written and directed by Marco Bellocchio. It stars Michel Piccoli and Anouk Aimée, who won the Best Actor and Best Actress prizes respectively at the 1980 Cannes Film Festival. The film also won the David di Donatello for Best Director and was