Frank Smythe Everest lights

Record summary

What happened British mountaineer Frank Smythe wrote of two dark or luminous objects hovering and pulsating in the sky during the 1933 Everest expedition. The observation was later promoted as a pre-war UFO sighting. Smythe’s note is brief and offers no range reference, photograph or second observer. Evidence A first-person expedition account preserves the observation. Explanations considered Balloons were improbable at that altitude, but cloud fragments, airborne debris, birds and visual effects in extreme conditions remain possible. What remains uncertain Without duration, angular size or corroboration, the objects cannot be identified or shown to be extraordinary. Primary source Frank Smythe Everest lights — Wikipedia