NPCs composing that spawngroup :

an_elemental_capturer (50%)

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

hole_30, range=78 (182,321,-348)

hole_32, range=84 (307,421,-331)

hole_53, range=31 (262,373,-346)

hole_127, range=42 (250,420,-332)

hole_129, range=19 (249,391,-346)

hole_173, range=80 (245,461,-332)

hole_191, range=86 (291,443,-332)

hole_193, range=90 (321,367,-332)

hole_202, range=60 (292,376,-332)

hole_216, range=98 (318,427,-332)

a_flighty_fiend_189562, range=94 (292,455,-332)

a_rock_golem_189633, range=90 (171,449,-335)

a_rock_golem_189638, range=75 (245,456,-332)

a_rock_golem_189639, range=23 (252,370,-346)

a_rock_golem_189640, range=57 (252,436,-332)

va_hole_53, range=31 (262,373,-346)

va_hole_191, range=86 (291,443,-332)

va_hole_193, range=90 (321,367,-332)

va_hole_202, range=60 (292,376,-332)

va_a_rock_golem_189633, range=90 (171,449,-335)

va_a_rock_golem_189638, range=75 (245,456,-332)

va_a_rock_golem_189639, range=23 (252,370,-346)

va_a_rock_golem_189640, range=57 (252,436,-332)