The scenario “A Tear for Ossir”

Thanks. As soon as I get home, I'll start looking for a leprechaun. And I think I left Ossira at the Sanctuary.

Added 6 hours and 6 minutes ago
I checked all the markers. They said I need to go back 2 steps. I think that's near the observatory, next to the cart with artifacts. I dug everywhere. Where is the Tear? Please tell me where it's buried.