Natural settings
It is formed in the Middle Triasic dark-grey Gutenstein limestones of the Biely Váh Series of the Choč Nappe, by ancient ponor waters of the Biely Váh side branch. Cave length is 530 m. Original river modelled passages are in several places reshaped by collapses, mainly along the interbed limestone surfaces.
Underground spaces are decorated mostly by stalactites, stalagmites and flowstone pools. A large part of the cave is filled with fine-grained sediments from floods of the Biely Váh River and perhaps also from waters of the ponor water flow in half-blind valley in Priepadlá
Air temperatures range between 6.5 and 7.1 °C, relative humidity between 94 and 96 %. Entrance parts are influenced by climatic changes on surface during the year, which are demonstrated by frost weathering of limestones.
The cave represents an important palaeontological finding place of cave bear bones (Ursus spelaeus). From among cave invertebrates, the finding of Eukoenenia spelaea is remarkable and unique and means the northest occurrence of a representative of this order of palpigrades, by what the Važecká Cave ranks among the biospeleological localities of the European importance. Sporadical occurrence of several bat species was recorded in the cave.