NPCs composing that spawngroup :

Burynai_excavator (50%)

lesser_charbone_skeleton (50%)

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

kurn_1, range=95 (135,-200,5)

kurn_2, range=94 (124,-191,-23)

Burynai_Excavator (50%)
Burynai_excavator (50%)

kurn_5, range=56 (103,-223,-102)

greater_scalebone (100%)

kurn_7, range=99 (45,-357,-22)

kurn_8, range=50 (108,-244,4)

kurn_10, range=49 (87,-218,-102)

kurn_12, range=27 (50,-285,-97)

kurn_35, range=28 (80,-278,-99)

kurn_41, range=41 (48,-299,-97)

Burynai_sapper (100%)

kurn_43, range=81 (89,-183,-102)

kurn_87, range=49 (71,-211,-24)

Burynai_burrower (50%)
Burynai_Excavator (50%)

kurn_142, range=94 (-20,-208,-23)

Burynai_burrower (50%)
greater_scalebone (50%)

kurn_144, range=73 (75,-187,-23)

kurn_156, range=62 (66,-197,-104)

Burynai_excavator (50%)
Burynai_sapper (50%)

kurn_161, range=71 (0,-221,90)

greater_scalebone (90%)
undead_crusader (10%)

kurn_163, range=81 (-10,-218,132)

kurn_165, range=47 (34,-219,132)

kurn_166, range=28 (32,-253,132)

kurn_169, range=61 (0,-270,132)

kurn_175, range=96 (52,-163,124)

kurn_176, range=9 (63,-250,124)

kurn_276926, range=96 (-28,-218,134)

greater_scalebone (90%)
undead_crusader (10%)