The doorway is carved directly into the stone, and beyond, there is pitch black. They hurdle through it at speed, and a moment later, the ground shakes. The entire cavernous space around them rings, and dust and debris rain down from the ceiling.

The behemoth had slammed bodily into the canyon wall, almost taking the mountain down with it.

Alex sprawled on the far wall, turning back to look over Ichabod's shoulder, expecting to see the swarm boiling through after them.

There was nothing there. The wall was smooth. Featureless. And she could tell because there was a torch in a wall sconce right where it should have been.

She sinks down to the floor, breathing like a race horse, one hand curled around her aching ribs. "I'm never eating lobster again!"