NR-1 Sinkhole interest, as sinkholes are generally believed to form only in environments which are subaerial, or exposed to the air. In contrast, the NR-1 Sinkhole is believed to be too deep underwater for the area to have been exposed to the air during formation in the Neogene. It was the first documented evidence suggesting that it is possible for karst sinkholes to form entirely underwater. 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
Garrison A Cricket Ground Garrison A Cricket Ground Garrison A Cricket Ground is a cricket ground in Colchester, Essex. The first recorded match on the ground was in 1924, when Essex played their first first-class match there against Gloucestershire. Essex played 25 first-class matches there between 1924 and 1972, playing their final first-class match there against Somerset in the 1972 County Championship. In addition, the ground has also hosted 2 List-A matches, the first of which came in the 1970 John Player League when Essex played Yorkshire. The second and final List-A match at the ground came in the 1972 John Player League when