A former co-worker used to have a shop on Cherokee Street about 15 years ago. He told me that a neighboring building had access to the caves through the basement, though its owner was too afraid to explore it.
Could that have been across from what is now Earthbound Beer? If so, they hand-dug all the debris out of the cave and you can pretty easily get a tour. The owner said the cave under the cave is off limits b/c they almost ran out of air while exploring it.
A former co-worker used to have a shop on Cherokee Street about 15 years ago. He told me that a neighboring building had access to the caves through the basement, though its owner was too afraid to explore it.