Sinkhole divers. Some of the most spectacular are the Zacatón cenote in Mexico (the world's deepest water-filled sinkhole), the Boesmansgat sinkhole in South Africa, Sarisariñama tepuy in Venezuela, the Sótano del Barro in Mexico, and in the town of Mount Gambier, South Australia. Sinkholes that form in coral reefs and islands that collapse to enormous depths are known as blue holes and often become popular diving spots. Large and visually unusual sinkholes have been well-known to local people since ancient times. Nowadays sinkholes are grouped and named in site-specific or generic names. Some examples of such names are listed below. The
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