"Yes. They... " Hm. How to put this. Celehar rubs a thumb across his mouth as he considers it.

"I cannot claim familiarity with all the ways spirits linger in the land, but they seem tied to nothing, and interested in little, besides us. They watch - when kept from the pools in the caverns, they began to grow restless, maybe even aggressive. They are a ghoul of the spirit, perhaps, rather than the flesh. A revetheralin, though the spirit's origin is unknown to us. Nevertheless, they hunger for something that they might take from us. Memories, vitality - something they lack." He sighs. "Maybe not even maliciously, but I still find it a danger."