User blog comment:Mastercodeagain/what is the story about the cave with the red painted stone?/@comment-4787430-20121211072334

That would be Hrothmund's Axe, it first appeared in Morrowind's expansion,. Unfortunately, the axe cannot be removed, it was never meant to be obtainable, you were only able to touch it to activate in order update a quest that was tied to it, which was called The Mead Hall Massacre. Now Hrothmund's Axe is back in for the quest Retaking Thirsk, again not intended to be picked up, but rather to be interacted with, as Bujold the Unworthy does in order to commune with Hrothmund's Spirit.