Biologists believe a group of four wolves may have dispersed from the Nelchina Basin in southcentral Alaska to the Brooks Mountain Range in northeastern Alaska, over 732 km away. Two of the wolves were radio collared and believed to have been last seen in the Vicinity of St. Anne's Creek. Contact with them was lost on April 10, 1978. On January 10, 1979, two radio signals with frequencies and pulse rates identical to the missing St. Anne's Creek wolves were located in the Brooks Mountain Range of northeastern Alaska. Researchers in the region confirmed that they were not missing any radio collared wolves in the location. This is a record dispersal for a group of wolves and indicates the ability of wolves to traverse long distances and repopulate areas with suitable habitat and prey.