On the north west side of the island is a popular diving site 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).
James Simmerman as Bank Manager in the movie, Bronco Billy a 1980 film starring Clint Eastwood and Sondra Locke.
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The final "wild west show" scene of the Clint Eastwood movie Bronco Billy was filmed in Fort Boise Park in October 1979.