User blog comment:Timeoin/Skyrim Expansion?/@comment-71.236.83.213-20111122135943/@comment-71.124.132.242-20111128135415

Vvardenfell did not sink. The eruption ruined the landscape and caused the water that surrounds it to boil. Vivec City, being on the water, sunk when the Moon hit it. But so far as I know the entire landmass is still above water.