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@AdamCoffman@mathstodon.xyz
2025-07-30 22:55:18

At another tourist attraction in Central #Indiana , the Bluespring Caverns 🦇 - with an interesting guided boat tour of a long underground river.
#Geology #Speleology

The mural is a map of the completely underground stream through the cave system. There is also a gem/rock themed gift shop