NPCs composing that spawngroup :

Burynai_sapper (33%)

Burynai_sapper (34%)

greater_scalebone (33%)

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

kurn_1, range=93 (73,133,3)

greater_skeleton (100%)

kurn_9, range=84 (97,170,21)

scalebone_skeleton (100%)

kurn_11, range=59 (110,143,3)

greater_scalebone (50%)
greater_skeleton (50%)

kurn_13, range=71 (162,192,3)

kurn_15, range=87 (82,143,3)

kurn_16, range=89 (169,31,-134)

lesser_charbone_skeleton (50%)
lesser_icebone_skeleton (50%)

kurn_22, range=59 (140,175,3)

kurn_58, range=76 (180,46,-119)

Burynai_Excavator (50%)
Burynai_sapper (50%)

kurn_59, range=28 (139,129,-116)

Burynai_excavator (50%)
Burynai_sapper (50%)

kurn_60, range=58 (152,177,-116)

Burynai_sapper (100%)

kurn_61, range=55 (165,176,-116)

Burynai_excavator (50%)
lesser_icebone_skeleton (50%)

kurn_95, range=62 (224,142,-39)

Burynai_excavator (100%)

kurn_104, range=12 (154,123,-39)

kurn_115, range=68 (137,58,-39)

Burynai_Excavator (50%)
lesser_icebone_skeleton (50%)

kurn_174, range=82 (130,47,104)

kurn_190, range=87 (93,73,104)

kurn_191, range=83 (109,58,-39)

an_undead_jester (20%)
thick_boned_skeleton (80%)