NPCs composing that spawngroup :

Burynai_burrower (33%)

Burynai_Excavator (33%)

Burynai_Excavator (34%)

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

kurn_1, range=18 (135,-200,5)

kurn_2, range=26 (124,-191,-23)

Burynai_Excavator (50%)
Burynai_excavator (50%)

kurn_5, range=57 (103,-223,-102)

greater_scalebone (100%)

kurn_7, range=34 (129,-217,-22)

kurn_8, range=69 (108,-244,4)

kurn_10, range=69 (87,-218,-102)

kurn_30, range=62 (201,-152,-22)

kurn_31, range=73 (202,-137,-22)

kurn_32, range=45 (128,-151,-23)

Burynai_Excavator (100%)

kurn_33, range=40 (172,-225,-102)

Burynai_sapper (100%)

kurn_34, range=92 (156,-98,-103)

lesser_charbone_skeleton (100%)

kurn_36, range=63 (199,-232,-102)

kurn_37, range=43 (146,-147,-104)

kurn_38, range=57 (172,-137,-104)

kurn_43, range=62 (89,-183,-102)

kurn_81, range=92 (174,-280,-23)

kurn_87, range=82 (71,-211,-24)

Burynai_burrower (50%)
Burynai_Excavator (50%)

kurn_96, range=99 (192,-281,-22)

Burynai_Excavator (50%)
greater_skeleton (50%)

kurn_109, range=82 (143,-108,-24)

kurn_114, range=98 (162,-92,-24)

kurn_144, range=76 (75,-187,-23)

kurn_156, range=85 (66,-197,-104)

Burynai_excavator (50%)
Burynai_sapper (50%)

kurn_165, range=46 (106,-200,124)

kurn_178, range=38 (116,-175,124)