Phenomenon type
Physical trace or ground marks
Cases with ground marks, plant damage, residue, or physical alteration attributed to the encounter.
5 cases in the archive
- OTHER · 1981-01-08 · contestedTrans-en-Provence Physical Trace Case
French farmer Renato Nicolaï reported observing a small disc-shaped object briefly land in his garden. The French national space agency CNES, through its UAP study group GEPAN, conducted formal soil and plant analysis at...
- DoD · 1980-12-29 · contestedCash-Landrum Incident
Vickie Landrum, Colby Landrum, and Betty Cash reported observing a diamond-shaped object discharging flame over a roadway near Houston, Texas, accompanied by what they described as approximately 23 helicopters. All three...
- DoD · 1980-12-26 · contestedRendlesham Forest Incident
USAF security personnel stationed at the joint RAF Bentwaters / RAF Woodbridge bases reported encountering an unidentified object in the adjacent Rendlesham Forest over the nights of December 26-28, 1980.
- DoD · 1964-04-24 · contestedLonnie Zamora, Socorro Landing
New Mexico State Police officer Lonnie Zamora reported observing an egg-shaped object on the ground with two small humanoid figures nearby. The object reportedly took off vertically as Zamora approached, leaving physical...
- FBI · 1947-07-08 · contestedRoswell 1947 Historical File
Historical FBI documentation related to the 1947 incident near Roswell, New Mexico, including period correspondence and press handling.