The document discusses the Floating Green, a unique feature of the 18-hole golf course at the Coeur d'Alene Resort in Coeur d'Alene, Idaho. The Floating Green is a 22,000-ton island green on the resort's 14th hole that is moved daily to different locations in Lake Coeur d'Alene using an underwater cable system. This daily movement creates a constantly changing challenge for golfers, who must hit to distances ranging from 90 to 220 yards and then take a short boat ride to the green to set up their next shot.