These tunnels are thick limestone sprinkled throughout with quartz crystal. We decided it was a good location to utilize the Jacob's ladder to further amp up the energy.
Despite being deep underground, we were able to pick up communication on a ghost box. Some of the communication was taunting and bizarre.
There were other, anomalous sounds in the tunnel as well as shadow figures. Historical info on the location says that both men and women were abused in these tunnels and there are rumors of various nasty entities making themselves known to any who dare the dark passages.
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