UFO volcanic rock in Montana

Summary

A man in Martinsdale, Montana, claimed in 1956 to have found an object containing a self-powered unit activated by an unknown mineral. In a letter to authorities, he stated the object was an "alien missile" and requested immediate contact. Three witnesses described it as a black-gray volcanic rock with an elliptical shape and hollowed sides. The official report concluded it was a common rock, though the man showed great enthusiasm for his discovery. The investigation confirmed the object had no anomalous features and the witness was highly suggestible. Experts noted the rock was typical of the region, known for volcanic formations.