Triangular UFO sighted in Portland in 1967

Summary

In March 1967, a witness in Portland, Oregon, observed a large triangular object. The observer described a craft 130 feet long and 60 feet wide, with three bands of colored lights (green, red, and blue) parallel to the leading edges. The object moved without visible tail or exhaust, and the sighting lasted two hours. The report notes that the witness, a miner considered very reliable, observed the phenomenon from the ground, without optical aids, and also noted unusual animal behavior. Despite the duration and reliability of the witness, the official conclusion was insufficient data for evaluation.

The report includes details about the exact location of the sighting, near Oak Grove Butte, and mentions other unexplained phenomena such as mysterious explosions and abnormal mineral concentrations. The witness requested that the information not be made public for business-related reasons. Despite multiple interviews and verifications, the lack of physical evidence and the ambiguity of the data led to the conclusion that the nature of the observed object could not be determined.