Nine-kilometer tunnel allegedly connects Derinkuyu Underground City to Kaymakli underground city. Wikipedia states Derinkuyu Underground City connected to Kaymakli via 9-kilometer tunnel Tunnel depth estimated at 60 meters or more below surface Connecting tunnel reportedly narrower than main passages
Derinkuyu's full extent remains largely unexplored, with only a portion open to visitors. Wikipedia documents a 9-kilometer tunnel connecting Derinkuyu to Kaymakli, though the precise depth, passage width, and collapse history of these tunnels are not consistently recorded in major sources.
Key Facts
- Wikipedia states Derinkuyu Underground City connected to Kaymakli via 9-kilometer tunnel
- Tunnel depth estimated at 60 meters or more below surface
- Connecting tunnel reportedly narrower than main passages
- Tunnel allegedly partially collapsed, possibly intentionally
- Locals report additional 21-kilometer tunnel to Soan Lee cave city
- Connecting tunnels too narrow for comfortable human passage
Related site: Derinkuyu Underground City — view location, images, and history on the Ancient Nerds map.
Source: DERINKUYU DECODED: Underground City Built Before the Flood? by SPIRIT in STONE