A design for a scary monster that lives in a crater in the desert. 

The prompt required it to be terrifying. Two things I think make creatures scary are 1) being spider-like since most people, it seems, find spiders scary and 2) have no eyes. It automatically makes something seem more sinister.

(And little did I know, when this was created back in 2016, that a couple of years later a somewhat-similar monster would appear in "Stranger Things".)