Russian Underground [google_map_easy id=”16″] Location: Arabika Russia Functions: Unknown Levels: Unknown Tunnels to: Unknown Notes: The world’s deepest cave (at the time) is being explored in the West Caucasus. Source: Location: Bolotnikova Russia ? Functions: Unknown Levels: Unknown Tunnels to: Unknown Notes: A Russian lake mysteriously sinks into the ground and disappears. A Russian lake mysteriously sinks into the ground and disappears. Source: Location: Cape Farvel Russia ? Functions: Unknown Levels: Unknown Tunnels to: Unknown Notes: Source: Location: Egvekinot Russia […] Read More