User blog comment:Glorfion/Helms Deep in the 4th age/@comment-46.129.74.31-20130827140419

First of all the Dwarves did not control all fortresses and cities in Middle-Earth. They only estalblished realms in Moria, Lonely Mountain and the glittering caves. The Dwarves did repair the gates of Minas Tirith if that is something you are refering to. During the Fourth Age all races except man faded away. The Elves left Middle-Earth and the Dwarves just stuck to their caves and holes and because there weren't many Dwarf women they just faded away. The Hobbits kept on living in the Shire peacefully and it is not known what happened to them. A Dwarven colony was started under the leadership of Gimli after War of the Ring at Helm's Deep. If this lasted till the end of the Fourth Age is not known