Editing Journey to the Ygg (section)

==== so you have chosen death ====
The Deep Crow will only make hit-and-run attacks. It will use the dark sky as cover to use the hide bonus action each round. If it succeeds on the Mandibles attack, it brings the target into the sky with it, where escaping the grapple can cause a potentially-lethal fall. Though staying in it's maw may prove more lethal. Once someone has died to the creature, it will take the corpse in tow and leave back to its lair. Roll a die appropriate to the party size to determine who gets to play Raven.

If they choose to disengage, the cave is in the bottom-left corner of the map where the dark ground is.