On the northwest side of the island is a popular diving site is known as "Bronco Billy", so named because of the surge which carries divers through a box canyon is thought to be similar to riding a bucking Bronco (it is believed that the name pre-dated the 1980 film of the same name). The site achieved a degree of fame when Jacques Cousteau declared it to be his favourite site in the Territory, ahead of more famous dive sites like the Wreck of the Rhone and The Indians.