In the 1990s, a Bristol Bay native named Joseph was left alone to overnight inside an unfinished, windowless log cabin frame under construction on the west bank of the Nushagak River, roughly 40 feet from a steep riverbank cut. After executing a secure, bear-aware camp cleanup, Joseph heard an anomalous, interactive series of 'imitation wolf howls' echoing from several miles deep in the timber line. Sitting on the entrance logs at dusk, a severe 'glass-dome' silence enveloped the tree line, and the vocalizations re-emerged less than 200 yards out.