Originally posted by jjrobinson2:

Also, the Gjall took out everything inside the earthworks.

Pretty sure that happens with any enemy capable of AoE, like blobs (on organic creatures like domesticated animals), lox and shamans. AoE is equally punishing no matter who is employing it or employed upon...

Black marble is immune to fire damage and other elements, and resistant to all physical damage except pickaxe. Stone is only immune to poison and spirit.