NR-1 Sinkhole NR-1 Sinkhole The NR-1 Sinkhole is a giant underwater sinkhole located in the Straits of Florida southwest of Key West, Florida. It is found at an approximate depth of of water at the foot of the Pourtales Escarpment, an area of Quaternary sediment. It was discovered in October 1994 during a survey conducted by the American submarine NR-1, a U.S. Navy nuclear research submarine, and is named for the submarine. It was first identified via side-scan sonar and near-bottom echo sounder data, prompting a second survey in May 1995 to confirm the finding. Discovery of the NR-1 Sinkhole prompted scientific
Bayou Corne sinkhole of the damage it has caused, which sent former and current residents of the town into a frenzy as a heated debate ensued over whether the company believed to be responsible for severe damage and loss of homes should be given permission to tamper more with an area already considered to be "deeply contaminated," as environmental activist Nara Crowley stated. In July 2015, Texas Brine began a series of lawsuits against Occidental Petroleum, claiming that an oil well drilled by Occidental Petroleum in 1986 triggered the cavern wall break that led to the creation of the sinkhole. Texas Brine is