The scenario “A Tear for Ossir”

The first time I played this scenario, the tooltip near the artifacts and palm tree said, "Protect your eyes!" I decided that the point of the game was to reach that tooltip because it was the last one I had, and the Tear was somewhere nearby. I searched around and found the Tear close by. And then I gave up on the scenario because it seemed uninteresting. Now, my brother has gotten into the game and is also playing this scenario. And he can't find the Tear no matter what. Now I'm going to replay it for the second time.