Raven Rock is a location in Skyrim: Dragonborn
It is located on the southern coast of the island of Solstheim
How to get to Raven Rock
To get there, talk to Gjalund Salt-Sage in Windhelm.
Background
Raven Rock, Solstheim's main settlement, is firmly under the control of House Redoran, the most powerful of the Great Houses of Morrowind.