Triangle-shaped UFO observed in France in 2013

Summary

A witness in Romagnieu (France) was awakened by rain and went to his courtyard to observe a silent, dark-colored triangular object with luminous edges. The object quickly ascended and disappeared into the clouds. The description does not match any known phenomena or common misidentifications. Although the GEIPAN proposed an on-site investigation, the witness did not respond. Given the brief nature of the sighting and the nighttime context, a hypnopompic hallucination—occurring upon waking—is considered a possible explanation. A retinal persistence effect is also suggested if the witness turned on the lights while moving from his room to the courtyard. Without further information, the case remains classified as "C," meaning unresolved.