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In page Oligo-Nunk Cave System:

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Until the early 1900s, the C & O railway operated the cave system as a profitable tourist venture. The company had in service multiple trains weekly and special trains that were running to the community of Carter City for the sole purpose of visiting the caves on Honeycomb Mountain. When J.F. Lewis purchased the property in the early 1900s, he had no immediate intentions of continuing the cave tours at both the Carter Caves and the Honeycomb Mountain Caves; so it was decided that the Honeycomb Mountain Cave tour operation would be suspended and that no visitors would be permitted.