NPCs composing that spawngroup :

an_elemental_monstrosity (33%)

NPCs spawning around that spawngroup :
(Max range : 100)

hole_11, range=34 (381,-129,-213)

hole_12, range=74 (372,-85,-212)

hole_13, range=94 (340,-250,-108)

hole_68, range=55 (398,-203,-109)

hole_107, range=63 (420,-190,-212)

hole_108, range=55 (420,-154,-212)

hole_109, range=55 (318,-129,-213)

hole_111, range=25 (362,-184,-212)

hole_112, range=33 (342,-183,-213)

a_ratman_warrior_189554, range=50 (359,-109,-211)

a_ratman_warrior_189555, range=54 (384,-108,-211)

va_hole_11, range=34 (381,-129,-213)

va_hole_12, range=74 (372,-85,-212)

va_hole_13, range=94 (340,-250,-108)

va_hole_107, range=63 (420,-190,-212)

va_hole_108, range=55 (420,-154,-212)

va_hole_109, range=55 (318,-129,-213)

va_hole_110, range=0 (365,-159,-213)

va_hole_111, range=25 (362,-184,-212)

va_hole_112, range=33 (342,-183,-213)