Lake Cote aerial survey photograph, Costa Rica

When
Aerial survey photograph of Lake Cote, Costa Rica, showing an unidentified object near the lake
The September 1971 aerial survey photograph of Lake Cote, Costa Rica Sergio Loaiza, Public domain, via Wikimedia Commons

A Costa Rican government mapping aircraft at 10,000 feet photographed a disc-shaped image over Lago de Cote that no one aboard saw; the frames before and after did not show it. Researchers Richard Haines and Jacques Vallee analyzed copies in 1989 and could not identify it.

Sources

  1. OtherPhoto Analysis of an Aerial Disc Over Costa Rica, J. Scientific Exploration 3(2):113-131 (opens in a new tab)Journal of Scientific Exploration (Haines and Vallee); archived copy, Internet Archive / 1989

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