Some sort of very bright moving light under the clouds, near the surface in extreme northern Canada. I still don't know what it was... like a searchlight pointed up, but not just sweeping from a fixed point, rather moving around. I watched it for about 5 minutes
Northern Lights on a flight SEA-KEF.
Urmia Lake in north-west Iran in 1990 with its (at the time) unfinished bridge across the midpoint that was halted after the 1979 revolution.
Low altitude flight over the atolls of the Maldives.
Cessna 182 flight over Mozambique and the Zambezi river delta.