I found this ungated cave entrance along the Sal Hallow Trail, about a quarter mile east of Sal Hallow. It's easily visible from a stream crossing on the trail (the stream exits the cave). It's marked "205" by an Interior Department survey marker.
The picture looks into the cave from the start of the entrance. You can see the full setting here. I don't know anything about the entrance, and it's not on my map. It may or may not connect to anything.
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