Archaeologists believe a cave in Utah may contain the remnants of North America’s oldest tribal casino.

Among the artifacts found in the cave near Great Salt Lake are hundreds of primitive dice and carved sticks, hoops and darts dating from the late 13th century. The University of Alberta’s Prof. Jack Ives told Western Digs there might be thousands more such items in the cave, making this find “unparalleled in western North America.”

Ives said the cave-dwellers, dubbed the Promontory Culture, apparently lived in relative affluence to some of their neighbors and thus had time to devote to leisure activities such as gambling.

In comparison to modern dice, the versions found in the cave were split pieces of cane marked on one side only. Up to eight dice were thrown simultaneously, with points awarded for however many landed with their marked side facing up, and the first person to reach an agreed upon total declared the winner.