Gaspar Grande Island is located off the coast of Trinidad and contains the Gasparee Cave system. The cave formed through the dissolution of the island's limestone bedrock by acidic groundwater. It contains numerous geological formations like stalactites, stalagmites, and pillars. Sinkholes are depressions above cave systems that form when the cave roof collapses. They provide openings into the cave below. Caves differ from sinkholes in that caves are the underground passages formed by limestone dissolution over time.