NABSQNO 16S-539740-4242725![]() An unnamed cave natural arch in Crawford County, Indiana Photo by Alan Cressler NABSQNO 16S-539740-4242725. This unnamed cave natural arch has eroded through sandstone. It is located in the Yellow Birch Ravine Nature Preserve, about a mile east of Taswell, in Crawford County, Indiana. The Preserve is managed by the Indiana Department of Natural Resources. Access is via hiking trails that pass several natural features before leading to the arch. The dimensions of this arch have not been measured yet, but it has an estimated span of 15 feet.
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