How do i get to the word wall that is supposed to be up the mountan where the Outside http://www.uesp.net/wiki/Skyrim:Ysgramor%27s_Tomb is at. I did the campanions quest and went back after seeing this is a wiki about where it was. but the door to the let is not open and i can not figure how to climb up it. the site said to the NW of the tomb but i don't see anything. anyone got any help or advice. please

Thanks