Tandil — Province of Buenos Aires

Official source account — 2020 annual report, printed page 39: An object in a Tandil photograph was discovered only during later review. Enlargement showed features compatible with transparent wings and two parallel appendages at one end. CIAE considered these anatomical details more consistent with an insect crossing the camera view than with a distant craft. It classified this as Type B, acknowledging that an accidental, short-lived photographic event could not be reproduced. The summaries distinguish reported observations from the agency’s proposed explanations. Source Type A/B ratings describe explanatory confidence and are not encounter classes. The map uses an approximate GeoNames locality centroid, not the observation point.