Battle of Red Mountain

Prelude
The Dwemer aided by Nord and Orc clans initially campaigned with great success in the north of Morrowind. They occupied much of the land now part of the Redoran, Vvardenfell, and Telvanni districts. The Dunmer who were poorly organized lost battle after battle until Nerevar was made General of all Dunmer forces.

Battle
Nerevar secured the aid of nomad barbarian tribesman and forced a major battle at the Dwemer stronghold at Red Mountain. The Dwemer were outmaneuvered and defeated the Dwemer with the help of Ashlander scouts.

The survivors fled to the Dwemer stronghold. After a brief siege, a Dwemeri traitor opened the gate. Nerevar and his troops stormed in and killed all the Dwemer leaders. Nerevar and Dumac dueled with Nerevar winning but still being mortally wounded.

Aftermath
Nerevar died from his wounds. The Chimer were transformed by Azura into the Dunmer and the Dwemer were driven to extinction. Three of Nerevar's councillors later formed the Trbunal which was the major religion in Morrowind until the end of the Third Era.