Creatures of FASA

FASA 365 Day 135, Exo-Spinalopede, 8-10 ft tall, 15-18ft full length. How this creatures body came to effectively look like some kind of spinal column, is anybodies guess.
Deep cave dwelling ( Insect ??)
Hunts by confusion. Laying about, looking like a pile of bones. Its prey is confused by the smell of something alive and investigates confidently; approaching what ‘appears’ to be dead.
By the time the victim realizes what they’re sniffing around at; its too late.