"Oghrann encompassed all of the great circle of Tunland and the mountain ranges that surrounded it: the Stormhorns on the east, and the Sunset Mountains, Far Hills, and Easting Peaks on the west. These mountains were known to the dwarves of the time collectively as ol Araubarak: the Great Shield."
See Dwarves Deep (2e) p.58,59,60 for more informations.
"Soyez réalistes : demandez l'impossible"
Sorry for my English... it's not my native tongue.