Board Thread:Morrowind/@comment-25903861-20160912135039/@comment-29845234-20160919181618

Vivec says that a frontal assault on Red Mountain would be suicide, and that the best chance anyone has would be to go unnoticed and alone, so as to not seem a threat even if they were found. The implication being that Dagoth Ur is too powerful for people to face head on, even if they were backed by the Tribunal.