The scenario “A Tear for Ossir”

Kitsune, I think the location of the tear is determined randomly. Well, that's what I thought. But in practice, I've never found two different locations; it's always under the palm tree. Today, I played through it again, and again it was under the palm tree... It's a mystery. Is the scenario somehow recognizing me? And is it deliberately placing the palm tree there? Meaning, is it the observatory?
Anyway, you just need to visit the markers in the order we talked about. Or dig near each marker.
There are several possible locations for the tear: near the starting castle, in the dungeon near the tomb, and at the observatory (my case). I don't think any other locations were mentioned. So, either Ossir returns to the beginning, goes underground, or stays on the surface.
Whether you killed TE or not doesn't matter...