Coiba Mare Cave - Peștera Coiba Mare

It is located in the village of Casa de Piatră - Arieșeni. It is easily accessible, being close to the forest road that leads to the hamlet.

The cave has the largest portal in Romania, followed by the one of Ponor Fortress.

The waters that get lost in the darkness of the cave come out in the light of day through The eruption of Tăuz a few kilometers downstream.