Board Thread:General Discussion/@comment-11276487-20130713025241/@comment-23836129-20130928152310

Shor isn't in the hall of valor as his appearence is too powerful for a mortal to comprehend, as said by one of the heroes in the hall of valor.

The heart of lorkhan didn't blow up the red mountain, some Mage trapped lots of souls in what I would assume to be a soul gem. In an attempt to release one of the trapped souls (almost definitely someone he knew) they all escaped. The power of this crashed into the ground and caused the red mountain to blow up. As stated on one of he Dragonborn DLC loading screens.