Hexe Marie's Hut

Apparently some hunters were staying in the hut at the entrance to Hexe Sanctuary. At a request from a hunter from Behr to check on his colleagues, I went to the hut, only to find it was empty. It was while I was moving toward the inner part of Hexe Sanctuary that I found the impaled skulls. These skulls glittered like they were polished anew, and the number of them matched the number of hunters. Could this be a warning from the Witches?