Kentucky Blues
Mammoth Cave National Park and other cave systems are part of a limestone belt that defines Kentucky’s landscape with its gently sloping bluegrass valleys. This geography made way for Kentucky to become the thoroughbred horse capital of the world and drive an economy built around events such as the Kentucky Derby. Beneath this limestone bedrock, a water supply often ranked No. 1 for water quality in the United States fuels well-known and developing dive sites that are surprisingly blue.