The Book of Beasts · MONSTER
Chapter 23
Crag Wyrm
also called gorge-hook, Pass-Devourer

A lean cliff dragon of the Eastern Crags that hooks itself beneath ledges and drops into the narrow washes where pack animals cannot turn.
Crag wyrms are all rib, sail, and hooked foreclaw. Their narrow hide matches the bone-grey mesas, and the loose throat-sail lets them cross a gorge on a hard wind without true flight. Young wyrms eat cliff vermin and stolen goats. Adults learn the barrow road and break a caravan at its middle, carrying one animal back to a shelf-nest while the rest bolt. A Pass-Devourer is an old female that has held the same gorge through many clutches; the cairns below her shelf are traveller warnings, not worship.