Cova de sa Gleda, Natural underwater cave in Manacor, Spain.
Cova de sa Gleda is an underground cave system in Manacor that extends below sea level. It forms part of a protected nature reserve and has multiple known entrances that researchers and divers can access.
Exploration began in 1974 when a diver first investigated the underwater passages systematically. From the 1990s onward, a local university conducted regular research to better understand the cave's structure and extent.
The name refers to the field of wells above the cave, where locals traditionally dug to reach drinking water. This naming shows how people described their surroundings based on what they could see and use.
Access is available through two separate entrances located in different areas of the region. Visitors should know this is a specialized diving area requiring proper preparation and equipment.
This cave system is the longest of its kind in Europe and ranks among the 20 largest underwater caves globally. Its size makes it a rare natural phenomenon that attracts researchers from around the world.
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