NPCs composing that spawngroup :

an_elemental_channeler (20%)

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

hole_2, range=22 (339,-291,-192)

hole_3, range=80 (424,-332,-192)

hole_7, range=98 (274,-332,-192)

hole_9, range=57 (347,-339,-192)

hole_10, range=96 (453,-310,-77)

hole_11, range=73 (428,-256,-99)

hole_12, range=0 (360,-283,-107)

hole_13, range=38 (340,-250,-108)

hole_68, range=88 (398,-203,-109)

hole_111, range=99 (362,-184,-212)

hole_227, range=14 (353,-296,-189)

hole_231, range=81 (384,-361,-187)

hole_234, range=84 (309,-350,-136)

a_flighty_fiend_189564, range=88 (425,-343,-191)

a_rock_golem_189642, range=56 (412,-304,-141)

a_rock_golem_189643, range=53 (413,-286,-188)

va_hole_2, range=22 (339,-291,-192)

va_hole_3, range=80 (424,-332,-192)

va_hole_7, range=98 (274,-332,-192)

va_hole_10, range=96 (453,-310,-77)

va_hole_11, range=73 (428,-256,-99)

va_hole_13, range=38 (340,-250,-108)

va_hole_111, range=99 (362,-184,-212)

va_a_flighty_fiend_189564, range=87 (424,-343,-187)

va_a_rock_golem_189642, range=56 (412,-304,-141)

va_a_rock_golem_189643, range=53 (413,-286,-188)