The Stone Sea is a natural phenomenon formed from the prehistoric lava of a stratovolcano: a 13-ha area evenly strewn with huge, bluish boulders.
They were probably created as earth tremors over millions of years cracked the solidified lava of the stratovolcano. Just a 10-minute walk away lies another unusual natural formation. Mineral deposits left on a travertine rock by a small stream of water flowing out of the thermal swimming pool have created an almost perfect likeness of a petrified mammoth, trunk and all – the Mamut. We recommend parking at the free car park of the Vodný raj Vyhne aquapark. From there, the travertine Mamut is a 2-minute walk and the turn-off to the Stone Sea a 6-minute walk.