Earth Elementals and juvenile Xorns.
An adult Delver can grow to 15 feet in length, and contact with them should be avoided as they secrete an acidic slime to aid their tunneling which is harmful to humans. Delvers can digest metal, but the substance has an intoxifying effect on the creature which is also somewhat addictive. Miners should beware Delver copper junkies!
This was a fun image to make, I feel pleased with it right now. The design is sort of a cross between a star-nosed mole and a slug, and discerning viewers will notice the hapless Xorn cruched between its gummy jaws.
Sorry for the long lack of posts, usual story of sudden freelance work plus summer break delaying things somewhat. I've got another image to post on Sunday and then the next few weeks will feature something a little special! Stay tuned.