The Megyer-hegy Tarn, with its volcanic origins, is among the most popular destinations in the Zemplén Hills. The tarn was classified as a nature reserve in 1997. Back in the day, there was a millstone mine operating here, the remains of which can still be visited today. The rainwater accumulated in the pit carved a small pond into the tuff, whose sparkling surface is surrounded by huge rock walls. The stone cabins and a few unfinished millstones reveal that miners used to live here for a long time. Put on comfortable hiking shoes and head to the 324-metre-high hill. You won’t regret it, because at the top you’ll have a breathtaking view of the rock ‘cauldron’.