he most popular and most visited place in the easternmost part of the Slovenský kras is the National Nature Reserve Zádielska tiesňava. Zádielska tiesňava always wins enquiries carried out among tourists when they are asked which of the Slovak valleys they consider the most romantic. The length of the narrow is 2,200 m, its depth is 300 m (in places even 400 m) and the narrowest places in its bottom are only 10 m wide. It hardly accommodates the old asphalt road. It is deeply incised into the white limestone rock in the karstic plateaux of the Slovenský kras. The conspicuous 105 metres rock attracts the glances of visitors. Its shape inspired its name - Cukrová homoľa (Sugar Cone).