Worm

'Hmm… what's that?' he walked a little further and saw the object in full clarity. He was expecting to see something that had to do with the formation that was laid down, but instead, it was a corpse.

And a very old one at that. The corpse's flesh had mostly rotted away, and all that was left was the skeleton. The clothes were also in tatters and the skeleton itself was pressed to the side of the tunnel.

"Was he buried here and only showed up when someone opened this tunnel? Or was he already here and whatever opened the tunnel pushed him to the side?" he wondered.

He walked closer to the corpse and looked at it. He didn't feel any disgust or awfulness when he looked at it. Instead, all he felt was sorry for the poor guy.