This account comes from the Dwarf books of Grudges that have survived from the dark times when the Dwarfs and the Greenskins were at war between themselves. The wars can be divieded into three peiods of conflict; the Goblin Wars, the Silver Road Wars and the Troll Wars.
The Goblin Wars (-1500 to -1450)
In the wake of the Time of Woes the Orcs, Goblins, Ogers, Trolls, Skaven and other evil creatures pour over the lands, looting the remaining Elf cities and destroying Dwarf holds.
The Dwarfs refer to the following five hundred years as the time of the Goblin Wars, as Dwarfs and Goblins fight for posession of the old Dwarf empire. The first Dwarf hold to fall was Karak Ungor which was infested with Night Goblins and renamed Red Eye Mountain by the infernal greenskins.
By -1499 Karak Varn, which was already flooded when eartquakes split rock apart allowing water into lower workings., was finally desroyed and occupied by Skaven and Goblins, despite the best efforts of the Dwarfs to defend the crumbling hold.
The following year the isolated Dwarf mines at Ekrund in the Dragonback Mountains was seized by Orcs after months of heavy fighting by the vastly outnumbered Dragonback Dwarfs. It is renamed Mount Bloodfang by the Orcs. Shortly after this the Dwarf watchtowers and forts throughout Mad Dog Pass are abandoned or sized by Goblins from the surrounding mountains.
In -1457 the Dwarf goldmines at Gunbad fall to Night Goblins after many years of fighting. Gunbad was the largest and richest mine in the World Edge Mountains and the unique source of Brynduraz or Brightstone, a brilliant blue crystal rock much valued by Dwarf craftsmen. It is fortified by the Goblins. This is the last hold of the war to fall to the Greenskins during the Goblin wars.
The Silver Road Wars (-1387 to -1362)
The Silver Road War begins between the Dwarfs and Goblins. Battles rages around Mount Silverspear, the richest remaining Dwarf mine. After twenty years the Dwarfs abandon the mines at Mount Silverspear to the Orcs. Mount Silverspear is taken by the Orc Warlord Urk Grimface who fortifies the mines still furter and renames it Mount Grimface.
With the loss of Gunbad and Silverspear, the Dwarfs lose their most important mines in the east and within five years they abandon the the last mines and smaller settlements in the eastern fringes of the Worlds Edge Mountains altogether.
The Troll Wars (-1250 to -1245)
Troll, Orcs and Goblins are driven north by the eruption of Thunder Mounatin. The Trolls (Orcs and Goblins) attack Dwarf miners and prospectors. The Dwarf settlemnts of Valhorn and Budrikhorn south of Karaz a Karak are destroyed by rampaging Trolls. They are later driven out by the Dwarfs.
From -1245 onwards the Dwarfs launch a series of attacks against Goblin-held territories. Dwarf King Morgrim Blackbeard leads his forces southwards. After several battles he manages to drive the Orcs and their evil allies from the mountains to the north of Mad Doig Pass. Another Dwarf Army led by Logazor Brightaxe heads east and recaptures Mount Gunbad, it is then forced to retreat by the apperance of Orc reinforcements. Dwarfs attack Mount Silverspear and are faced by Orc Chieftain Nurk Ard'ed. The Dwarfs are forced to return westwards to protect Karaz-a-Karak from a horde Ogers and Trolls. The horde is repulsed and the bodies of hundreds of Trolls are piled up and burned.
For the next 250 years the Dwarfs consolidate their hold over the mountains, gradually reopening many of their old mines and rebuilding countless tombs of their ancestors.
Kadrin Redmane
In -1185 Kadrin Redmane the Dwarf Runesmith leads an expedition into the ruins of Karak Varn where he discovers a rich vein of Gromril. The Dwarfs continue to mine the vein for several years and even talk of resettling the old hold. Then in -1136 Kadrin Redmane is ambushed and killed by Orcs beside the shores of Black water while leading a mule train of gromril ore to the High king. Kadrin slays 36 massive Orcs before he falls. His final act was to throw his rune hammer far out into the Black Water to keep it from the Orcs. Following Kadrin's death the Dwarfs hold on Karak Varn becomes increasingly tenuous under renew pressure from Orcs and Skaven. They are eventully driven out by Skaven.