Mortrag Peak is a Location in The Elder Scrolls V: Skyrim - Dragonborn
Getting to this location, you will want to start from the entrance of White Ridge Barrow. Head to the right-hand side of the Barrow and start jumping up the stones to the North. Move along the side
Follow the ledge to the West. Make your way to the section of the mountain directly behind the Barrow to the West.
Turn to the North and then start running and jumping up the mountainside. When you can, start climbing the rocks again
Follow the path to the Northeast initially, jumping to climb on up the slope itself. Save oncein a while to make things easier on yourself if you slip up during this path. It is going to be a lot of exploring to find the pathway upward to the Peak. Move along the sides and wind your way upwards.
After a lot of the back and forth, save whenever you are at a level point. You will wind your way upwards to the very peak. Jumping will be your best option to reach the top.