Sgrechian are legacy creatures of The Delve, presumably created long ago by the Nonmen to aid in tunneling the vast underground network. The eyeless creatures are the size and shape of a reptilian ostrich, with bullfrog lips and large, intricately formed ears. They have large claws and both hands and feet capable of sheering stone, heavily muscled tails. and a ridge-like organ along their back which seems to be an integral part of their most notable capacity. The beast can, after spending several minutes inflating their cavernous lungs, blast a scream that cracks stone when their mouth is pressed agains the surface. They can also, with a lower degree of effort, use this same capacity to stun and harm other creatures, disrupting their organs and bursting their eardrums. Sgrechian are not naturally aggressive, and mostly subsist on the lichens that grow in the Delve at the Nonman vents, but they are still avoided by smart explorers.