Pyramid Explorer

Ravne Tunnels

Visoko, Bosnia and Herzegovina

Underground tunnel system. Date: Date uncertain; no official dating found. Skeptics suggest old mining galleries.

Hypothesis: ancient mining galleries (unconfirmed). Osmanagich claims the Ravne tunnels, about 3.8 km long by his account, are an ancient network with "healing chambers" and a high concentration of negative ions. There is no independent confirmation.

Sources

• Bosnian pyramid claims (Wikipedia)
• Visoko pyramids (N1, intervista a Osmanagich)
• Ravne Tunnel Megaliths (Megalithic Portal)
• Tunnels to the Sun (Ancient Origins)
• Do the hills have lies? (Mapping the Plot)
• Skeptoid n. 140
• Ravne 3 Tunnel Complex (preprint Osmanagich, non peer-reviewed)
• The Mystery of Bosnia’s Ancient Pyramids (Smithsonian)