Darkhold

From LSWiki

If you should ever by chance go south of the jungle you might come upon the famed Darkhold. Although you can learn much from Tusk N'gor, the general of the guard, you should beware of the mighty Bloodbane, and let us not forget the wyvern and vampire that are known to have taken up residency in Darkhold.

-- Ishterio Konishiwa, Karmina 15, 766

Darkhold also houses Helborg, a necromancer and alchemist of no little skill, who will provide (hurried) training of his skills and enhancements. He is a good resource for enhancements that Erasmus is unable to provide... given that you are willing to fight the wolves guarding his door.

-- Galand, Lorien 24, 553

Tip:

• You can either pay Shaw to catapult you up to Darkhold or, with flight, you can simply "fly up."

Once you get up by whatever means, there is a tiny village adjoining Darkhold. There's Selthan's shop, Volkmar's Tavern, and a duergar that will take corpses and make you some fashionable attire.