In a shallow cavern beneath a gully floor is the former lair of a family of basilisks.

The cavern has low ceilings in the passageways (5 ft.), so that Medium creatures have to stoop to pass (and take squeezing penalties if fighting); the main cavern is deeper (10 ft.). The young and eggs are in a large nest at the back, with adults having sleeping places among the stalagmites at the cavern sides. The middle of the big cavern has a somewhat soft, muddy floor (and is 3 ft. lower than the surrounding areas).

The cavern is damp, and smells slightly of decay (like decomposing leaves); there’s also an odd, somewhat acrid scent, like a snake lair, perhaps. There’s no illumination; other than the occasional drip of water and the skittering of some cave insect, it’s quiet.

Eggs and young may be found here, and sometimes the parents. The basilisks have been slain; the eggs and young, removed. The place is empty now.