Board Thread:Lore Discussion/@comment-69.166.78.40-20140119224149/@comment-25047024-20140119225240

No. Red Mountain was pretty much caused by the Nerevarine (and Azura) who made the heart disappear. Without the heart, Vivec's (normal) god-powers diminished, and he disappeared. Vivec made Baan Dar hover above Vivec City with his power, but because Vivec was no longer there, it crashed into the surface. The shockwave caused Red Mountain to errupt.