Rock creature

Rock creatures were colossal lifeforms native to an class M planet within the vicinity of Motherlode. When dormant, they resembled massive rock formations that did not register as lifeforms to sensors. There were at least two species of rock creatures.

One type of rock creature had no legs, moving on a snake-like tail. It had a broad, flat face with three eyes. It had pincer like claws.

Another type of rock creature was quadrupedal, although it was able to stand on its hind legs. It had a long, sharp snout.

In 2269, a pair of rock creatures attacked Harry Mudd and an away team led by captain Kirk.