It's very dark under the shadow of the wing, but following the curve of the body makes it impossible to get lost, even if Kimmuriel didn't have darkvision anyway. There doesn't seem to be anything hidden here, though After walking the equivalent of at least a couple city blocks, he comes out the other side and starts to skirt the hindquarters—on this side, it's a hoofed foot like a pig's trotter.

Eventually, an enormous lion's tail comes into view, and beyond it, a final head will come into view—a serpent's head and neck, coming off the hindquarters like a second tail. The eyes and mouth are tightly closed, the nostrils mere slits. However, there is a wound just behind its jaw that has something of a suggestion of a raggedy, collapsing doorway...