REF: UAP/1970s/100Unexplained
1971-09-04
Lake Cote / Costa Rica aerial mapping photo
Lake Cote · Costa Rica·Official aerial photograph·1970s
Unexplained
§ ASummary
Government mapping aircraft's large-format camera captured a metallic disc over lake in one frame; negative analyzed (Haines, Vallee 1989); called best official UFO photo — 2021 drone re-scan of negative reinforced anomaly.
§ BWitnesses
Automated govt camera (Instituto Geografico Nacional)
§ CEvidence & Documentation
Original 10x10 negative; JSE analyses (Haines & Vallee 1989/1990); 2021 reissue
§ DOfficial Investigation
Costa Rican IGN archive; independent analyses
§ EStatus Assessment
Unidentified object on official film; no hoax vector identified
§ FVerifiable Sources
Haines & Vallee, JSE 3(2) 1989; UAP Media 2021 hi-res release
§ GCross-referenced cases6
1971-11-02🇺🇸 USA
Delphos ring
Landing trace (CE2)
1973-10-11🇺🇸 USA
Pascagoula abduction (Hickson & Parker)
Abduction claim
1973-10-18🇺🇸 USA
Coyne helicopter incident
Military helicopter near-collision
1973-10🇺🇸 USA
1973 US wave
National wave
1969-01-06🇺🇸 USA
Jimmy Carter sighting
Notable-witness sighting
1974-01-23🇬🇧 UK
Berwyn Mountains incident
Crash claim / explained core