NPCs composing that spawngroup :

Burynai_Excavator (33%)

Burynai_Excavator (34%)

greater_skeleton (33%)

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

kurn_1, range=65 (-111,-123,6)

greater_skeleton (100%)

kurn_7, range=80 (-225,-138,-22)

kurn_11, range=55 (-172,-30,4)

greater_scalebone (50%)
greater_skeleton (50%)

kurn_19, range=49 (-143,-130,-117)

kurn_20, range=70 (-138,-151,-117)

kurn_21, range=10 (-160,-95,-119)

kurn_23, range=83 (-246,-101,-123)

kurn_72, range=89 (-83,-48,-107)

Burynai_excavator (100%)

kurn_90, range=89 (-75,-73,-30)

kurn_111, range=70 (-146,-18,-23)

Burynai_Excavator (100%)

kurn_113, range=82 (-114,-19,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_125, range=87 (-186,0,-23)

kurn_129, range=68 (-228,-60,-23)

Burynai_Excavator (100%)

kurn_136, range=86 (-84,-53,-30)

kurn_154, range=53 (-164,-32,-23)

Burynai_Excavator (50%)
Burynai_excavator (50%)

kurn_158, range=25 (-184,-69,-23)

kurn_160, range=50 (-183,-38,6)

greater_skeleton (100%)

kurn_183, range=47 (-126,-57,48)

greater_skeleton (100%)