Rezervația naturală Peştera Comarnic:

Length: 6.2km, unevenness -100m. The Comarnic cave is formed by the Ponicova stream
which crosses the Navesul Mare hill underground, formed by Calcare de Valea Aninai, layered with intercalations of flint and Calcare de Plopa, compact. The cave is structured on three levels, the inactive level (tourist route, visitable), the temporary active level through which the water flows during floods or high flows, and the active level through which the water flows permanently. Characteristic for the inactive level are the large galleries with sand beaches, columns, domes, stalactites, stalagmites, collapse halls and trains of
roared On certain sections of the gallery, there are stalagmite slabs and large calcite basins (gurures), sometimes filled with water. The characteristic fauna consists of over 120 species of invertebrates (gastropods, oligochaetes, araneids, mites, opilionids, isopods, diplopods, collembola, trichoptera, coleoptera, diptera) and mammals
(chiroptera). Terrestrial species of invertebrates, amphibians, reptiles and mammals accidentally arrive in the cave. The visitable route is 1,750 m long and includes the Comarnic entrance, the Small Hall with Blocks, the Great Hall with Blocks, the Museum, the Great Organ, the Chinese Walls, the Treasury, the Cathedral Hall. The duration of the route is approx. 2 hours.
On the visitable route, you can see a wide variety of morphological forms (erosion levels, spoons, sand beaches and alluvium, terraces, septa) and forms of chemical precipitation (stalactites, stalagmites, columns, domes, curtains, slabs, crusts, pools). Sometimes bats can be observed in colonies or isolated specimens. The cave can only be visited accompanied by rangers - authorized tourist guides of the Administration of the Semenic National Park - Cheile Caraşului. The route is made of minimal facilities and lasts approx. 2 hours. It requires special attention to prevent slipping or hitting the ceiling/rock walls. The visiting schedule for groups of at least 5 people is between April and October, on Saturdays and Sundays. Monday - Friday we provide a guide only upon request made in advance at least 24 hours before the visit, for a minimum group of 5 people. The visit requires suitable footwear for the mountain and clothing suitable for a temperature of approx. 10 degrees and high humidity. The visit fee is 25 lei/adults and 10 lei/students.