🕳️ Derinkuyu Underground City in Turkey extends approximately 85 meters below the surface, with ventilation shafts reaching depths of up to 60 meters — the deepest shafts served as wells providing water to multiple levels! An extensive network of ventilation shafts enabled natural airflow throughout this remarkable multi-level complex. An extraordinary feat of ancient engineering!
Derinkuyu Underground City underground city features 52 ventilation shafts up to 60 meters deep

Key facts
- 52 ventilation shafts discovered at Derinkuyu Underground City
- Ventilation shafts reach depths of up to 60 meters
- Some shafts hit groundwater at the bottom
- Metal sheets cover the shafts preventing access to lower levels
- No reliable information exists on total depth of the facility
Site mentioned
Sources
Derinkuyu Underground Cityheracavesuites.com
It is truly an underground city, with areas for sleeping, stables for livestock, wells, water tanks, and pits for cooking, ventilation shafts, communal rooms, ...
Derinkuyu: the Deepest Underground City of Cappadociamadeinturkeytours.com
There is a well, 55 meters deep, that supplied the city's inhabitants with water. · Over 600 entrances to the town have been discovered in private residences and ...
Derinkuyu underground cityen.wikipedia.org
Derinkuyu also known as Elengubu, is an ancient multi-level underground city near the modern town of Derinkuyu in Nevşehir Province, Turkey, extending to a ...
Beneath the Surface: Unveiling the Ancient Wonders of ...regia-marinho.medium.com
It is an ancient multi-level underground city near the modern town of Derinkuyu in Nevşehir Province, Turkey.
THIS world's largest underground city under Cappadocia ...timesofindia.indiatimes.com
Perhaps the most impressive feature of Derinkuyu is its ventilation system. More than 50 shafts circulated fresh air throughout the city, ...
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