 Shawnee Cave is the last of three underground passages, totaling just over 8,000 feet, of a stream that originates southeast of the park, and flows through Twin Caves and Bronson Cave, within the park.Shawnee Cave can be entered through the Bronson Cave Entrance and exited via the Donaldson Entrance.The passage connecting Twin Caves to Bronson Cave is extremely dangerous and is off limits.