NPCs composing that spawngroup :

Burynai_sapper (50%)

lesser_icebone_skeleton (50%)

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

kurn_31, range=99 (202,-137,-22)

kurn_40, range=98 (153,-74,-104)

kurn_56, range=99 (171,14,-120)

kurn_57, range=63 (188,-26,-118)

greater_scalebone (100%)

kurn_64, range=95 (178,16,-120)

kurn_76, range=26 (223,-41,-118)

Burynai_excavator (50%)
Burynai_sapper (50%)

kurn_77, range=41 (284,-28,-120)

Burynai_excavator (50%)
greater_scalebone (50%)

kurn_78, range=66 (300,-8,-118)

Burynai_sapper (50%)
lesser_icebone_skeleton (50%)

kurn_79, range=84 (300,17,-118)

Burynai_Excavator (50%)
Burynai_sapper (50%)

kurn_88, range=98 (155,-83,-24)

Burynai_burrower (50%)
Burynai_Excavator (50%)

kurn_114, range=96 (162,-92,-24)