Donaldson/Bronson Cave

Donaldson/Bronson Cave (also known as Shawnee Cave) is located entirely within Spring Mill State Park. The cave is the downstream section of the Shawnee drainage system (Lower Twin and Upper Twin caves make up the remaining sections). For the entire length of the cave, you are in water. For most of the cave you are ankle to knee deep, but there are at least two short sections where the water is deep enough to require swimming/floating. The cave can easily flood, so do not enter during high flow, when there is a chance of significant rain, or during periods of rapid snow melt. There are no seasonal restrictions on trips into this cave.

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