Keldagrim
By Mindesto
Thanks to Celebi and Guitar_man12
Keldagrim is located through a troll infested cave directly east of Rellekka in the Fremennik Province. It is a major city with everything you would expect and more including new ways of travel via mine carts and steam powered boats. With over 40 unique npc's to talk with there's a lot to expect from Keldagrim in the future.
There are several mining spots interspersed throughout Keldagrim and surrounding caves. These include 1 gold, 14 coal, 4 iron, 5 tin and 2 copper. There is also a major gold mining spot, Arzinian Mines, just north of Dondakan that is available once you have completed the Between a Rock quest.
Other quests currently available in the Keldagrim area are The Giant Dwarf and Forgettable Tale of a Drunken Dwarf.