The clay looks like little dirt piles on the ground around the waterfall area, quite near the shellfish. As of the last hotfix, there should also be quite a few more wasp nests than before, which I hope will help them to be more accessible. If you can reproduce the exact graphic settings that are causing problems seeing the nests, please submit the details in a /bug so we can try to figure out what's going on there!
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(DominoDev) Re:bugged faction harvestables?
