NPCs composing that spawngroup :

Burynai_burrower (25%)

Burynai_Excavator (25%)

Burynai_excavator (25%)

greater_skeleton (25%)

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

kurn_1, range=61 (-111,-123,6)

greater_skeleton (100%)

kurn_4, range=92 (15,-58,127)

an_odd_mole (100%)

kurn_5, range=57 (-29,-107,106)

greater_scalebone (100%)

kurn_19, range=88 (-143,-130,-117)

kurn_21, range=87 (-160,-95,-119)

kurn_57, range=94 (19,-63,134)

greater_scalebone (100%)

kurn_63, range=62 (-24,-109,-105)

Burynai_excavator (100%)

kurn_69, range=80 (-7,-117,-105)

kurn_70, range=82 (-72,-155,-105)

kurn_71, range=34 (-41,-75,-107)

kurn_72, range=26 (-83,-48,-107)

Burynai_excavator (100%)

kurn_86, range=86 (10,-87,-106)

kurn_91, range=92 (-30,8,-39)

kurn_92, range=87 (11,-57,-39)

kurn_96, range=91 (11,-104,-40)

Burynai_Excavator (50%)
greater_skeleton (50%)

kurn_111, range=89 (-146,-18,-23)

Burynai_Excavator (100%)

kurn_113, range=66 (-114,-19,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_117, range=45 (-31,-85,-30)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_136, range=21 (-84,-53,-30)

kurn_140, range=80 (-56,-151,-23)

Burynai_burrower (100%)

kurn_141, range=93 (1,-128,-23)

Burynai_excavator (50%)
Burynai_Excavator (50%)

kurn_149, range=82 (-63,9,-30)

kurn_151, range=96 (-106,18,-39)

kurn_152, range=63 (-88,-11,-30)

kurn_153, range=64 (-62,-10,-30)

kurn_154, range=97 (-164,-32,-23)

Burynai_Excavator (50%)
Burynai_excavator (50%)

kurn_159, range=89 (-164,-85,-23)

kurn_160, range=77 (-53,1,9)

greater_skeleton (100%)

kurn_162, range=55 (-48,-121,132)

kurn_166, range=54 (-33,-38,104)

kurn_167, range=84 (-6,-121,132)

kurn_172, range=87 (-89,-159,88)

kurn_183, range=15 (-62,-65,129)

greater_skeleton (100%)
greater_skeleton (100%)

kurn_185, range=70 (-39,-12,104)

kurn_186, range=46 (-58,-30,104)