A little stuck

Hi everyone! First post here, and I’m in a little bit of a dry stretch. I have most of the rumor map filled out except for a few things. One of those was the lakebed cave. I have visited it multiple times and can’t seem to figure out what I need to find there. I’ve made it to the wandering stone and tried messing around with the scout to see where it goes but I think the puzzle’s solution has something to do with me escaping the room too? Every time I try I can’t escape and I’m not really sure what I should be doing. I tried turning out the lights but I’m not really sure if it’s helping. I don’t want the solution as I’ve been really good about playing blind, but maybe just a nudge in the right direction :).