NPCs composing that spawngroup :

Burynai_burrower (34%)

Burynai_Excavator (33%)

Burynai_Excavator (33%)

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

kurn_9, range=29 (-228,15,-23)

scalebone_skeleton (100%)

kurn_11, range=80 (-172,-30,4)

greater_scalebone (50%)
greater_skeleton (50%)

kurn_23, range=96 (-246,-101,-123)

kurn_118, range=16 (-250,-21,-23)

kurn_125, range=62 (-186,0,-23)

kurn_129, range=58 (-228,-60,-23)

Burynai_Excavator (100%)

kurn_154, range=88 (-164,-32,-23)

Burynai_Excavator (50%)
Burynai_excavator (50%)

kurn_158, range=90 (-184,-69,-23)

kurn_160, range=72 (-183,-38,6)

greater_skeleton (100%)

kurn_179, range=85 (-170,31,4)