AbstractRemains of a cave bear were studied from a new locality in the Prokoshev Cave in the Middle Urals (58°13´ N, 58°12´ E). Bones from all regions of the skeleton are present, bones are intact and without traces of human or animal activity. They all belong to the cave bear (Ursus kanivetz Vereshchagin, 1973). An AMS radiocarbon date of 53 375 ± 765 BP, IGANAMS–8632, was obtained from an adult mandible. The bones belonged to at least 18 individuals, including 4 individuals aged about one year, 1 aged about two years, 1 aged about three years, and 12 individuals over four years of age. Three skulls belonged to males and seven skulls belonged to females. The analysis has shown that the taphonomic type of this locality is a “mass burial.” This is the first “mass burial” of the cave bear in the Urals, found in situ, untouched by humans.