The Beast Revealed

Skulk, Swampwalk
Then fear left, and wonder, awe, compassion, and reverence succeeded in its place, for the sounds uttered
by the stricken figure that lay stretched out on the limestone had told us the awesome truth.
The creature I had killed, the strange beast of the unfathomed cave was, or had at one time been,
a MAN!!!
The Beast in the Cave—H. P. Lovecraft