No tracks, because he flew in. It’s a cheat, but a good one.
A man is found dead in the desert beside a rock. There isn’t a mark on him, and there are no tracks in the sand. What happened?
Give me a hintThe hint
He isn’t from round here.
Reveal the answerHide the answer
He’s Superman, and the rock is kryptonite
Source: Anonymous; no. 2.12 in Jed Hartman’s list of situation puzzles