Much of the low-elevation Black Rock consists of soft limestone, which has taken on a black patina from algae and the weather. The cay’s solitary position is halfway between Providenciales and South Caicos, so it’s often used as a reference point when travelling across the Caicos Banks.
Black Rock is quite small. At high tide, the cay is a narrow strip of ground that about 500 feet (150m) across. There’s not much vegetation on the rock, yet the area is a haven for birdlife.
The Caicos Banks excels as a
bonefishing destination, and the waters surrounding Black Rock are no exception.
Several deeper channels run past Black Rock, and bonefish, tarpon, and barracuda are abundant in the region.
There’s More Than One Black Rock!
This cay isn’t the only Black Rock in the Turks and Caicos. There’s also a namesake limestone outcropping feature on the north coast of
Black Rock on East Caicos is a low 'ironshore' cliff feature located on the otherwise sandy north coast of East Caicos. This low rock has naturally collected the highest density of flotsam fishing nets in the country.