One of the most attended theme camps at Burning Man in Black Rock City Nevada is the "Thunderdome" which is a recreation of the Thunderdome from the Mel Gibson movie, "Mad Max." The crowd is roused into the chant... "TWO PEOPLE ENTER... ONE PERSON LEAVES. TWO PEOPLE ENTER... ONE PERSON LEAVES" as the two participants enter into the dome. They battle each other with foam bats and one person is declared the winner after every bout.