NPCs composing that spawngroup :
a_rock_pile
(50%)
NPCs spawning around that spawngroup :
(Max range : 100)
lichencreep111811
, range=93 (-1677,538,21)
a_lava_golem
(50%)
lichencreep111832
, range=44 (-1746,532,117)
a_lava_mephit_worker
(50%)