I've made contrails at 50 feet agl during an low pass to inspect a landing site in a ski equipped Garrett TPE331 powered turboprop in Antarctica. I did not actually see them as I was flying but the FO commented on the shadows they were making behind the aircraft. Noone on the ground either to get a photo
not because it was too cold, but as noone had ever been there before.
It was -37 OAT and 9000'.
CS