Mayor's Cave, Natural cave in Grosuplje, Slovenia
Mayor's Cave is a cave system in Grosuplje stretching 330 meters in length with a vertical range of 120 meters across seven interconnected halls. The chambers are filled with stalactites and stalagmites that run through the underground maze.
The system was first documented in 1689 by Johann Weichard von Valvasor, an early explorer of the region. It later gained prominence when Mayor Josip Perme explored it in 1926, launching the modern era of its discovery.
The name comes from Mayor Josip Perme, who explored the cave in the 1920s and brought local attention to this place. Visitors today can sense the connection to the nearby Tabor Church two kilometers north, which reflects the regional roots of the area.
The cave is open to visitors only on weekends and holidays and requires advance booking. Tours follow marked pathways and last around one hour.
The cave's structure creates a natural cold trap that preserves ice formations throughout the year in its underground chambers. This phenomenon allows visitors to see ice in an underground setting where it would normally not be expected.
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