Macocha Gorge

The sinkhole is 138.5 metres (454 ft) deep, which makes it the deepest of its kind (light hole type) in Central Europe.

Macocha Abyss is located in the Vilémovice municipality in the South Moravian Region, 20 kilometres (12 mi) north of the city of Brno.

[1] At the beginning of the Pustý Žleb (Desolate Canyon), below the town of Sloup, the waters of the Sloupský Brook (one of the tributaries of the subterranean river Punkva) helped to form an extensive system of underground passages, domes and abysses.

At 3,000 metres (9,800 ft) long, the viewing circuit is the longest underground trail open to the public in the Czech Republic.

According to a popular folk story, the abyss was named after an evil stepmother who married a widowed farmer from a nearby village.