NPCs composing that spawngroup :

#The_Insanity_Crawler_ (25%)

Shadows (25%)

The_stones (25%)

You_can_feel (25%)

NPCs spawning around that spawngroup :
(Max range : 200)

akheva1432087, range=66 (1060,-1540,13)

akheva1432086, range=59 (1060,-1650,17)

Centi_Thall (34%)
Xin_Thall (33%)
Xin_Thall (33%)

akheva1432085, range=86 (1100,-1650,17)

Centi_Thall (50%)
Xin_Xakra (50%)

akheva1432084, range=182 (945,-1438,13)

Rygan_Anisher (50%)
Rygan_Anisher (50%)

akheva1432083, range=178 (1103,-1436,13)

akheva1432075, range=116 (1034,-1715,19)

Sheleric_Vis (100%)

akheva1432074, range=151 (1128,-1714,19)

Sheleric_Vis (100%)

Xin`Xakre_1433591, range=114 (1060,-1709,19)

Shadows (34%)
The_stones (33%)
You_can_feel (33%)

The_stones_1433660, range=36 (1000,-1619,19)

The_stones_1433661, range=30 (1000,-1599,19)

Shadows (34%)
The_stones (33%)
You_can_feel (33%)

The_stones_1433662, range=25 (1015,-1619,19)

The_stones_1433663, range=15 (1015,-1599,19)

The_stones_1433664, range=140 (1020,-1739,19)

The_stones_1433665, range=120 (1020,-1719,19)

The_stones_1433666, range=100 (1020,-1699,19)

The_stones_1433667, range=20 (1030,-1619,19)

The_stones_1433669, range=25 (1045,-1619,19)

The_stones_1433670, range=15 (1045,-1599,19)

The_stones_1433671, range=143 (1060,-1739,20)

The_stones_1433672, range=36 (1060,-1619,19)

The_stones_1433673, range=30 (1060,-1599,19)

The_stones_1433674, range=49 (1075,-1619,19)

The_stones_1433675, range=45 (1075,-1599,19)

The_stones_1433676, range=60 (1090,-1599,19)

The_stones_1433677, range=156 (1100,-1739,20)

The_stones_1433678, range=138 (1100,-1719,20)

The_stones_1433679, range=122 (1100,-1699,19)

The_stones_1433680, range=77 (1105,-1619,19)

The_stones_1433681, range=75 (1105,-1599,19)

The_stones_1433682, range=92 (1120,-1619,19)

The_stones_1433683, range=90 (1120,-1599,19)

The_stones_1433684, range=106 (1135,-1619,19)

The_stones_1433685, range=105 (1135,-1599,19)

The_stones_1433686, range=178 (1140,-1739,19)

The_stones_1433687, range=155 (1140,-1709,19)

The_stones_1433688, range=120 (1150,-1599,19)

SheiTrap, range=91 (1085,-1672,18)