Board Thread:Morrowind/@comment-99.103.72.137-20150704184754/@comment-6881629-20150710164908

Lava between Seyda Neen and Balmora? The area around those two would be the Bitter Coast or West Gash regions click the region names and theres links to the locations in them on the wiki page, you might recognize one as being the place.

Lava is usually on the other side of Vvardenfell though like the Molag Amur region.