Mammoth Rider

I have had this mammoth a long time and also modified it and painted it many years ago. I was going to use it in a caveman game but never did. Anyway here it is ridden by a DSG Viking. I am going to modify the Viking and add some accessories to the mammoth, perhaps even with a howdah.
I had this idea long before I watched that great battle scene in Game of Thrones with the Wildling siege of The Wall.

In my fantasy campaign (yet to be restarted) these Vikings are the Hillmen, who hire themselves out to others, get frequently used by the dark forces Chaos but also have a mind of their own. They are a chance element who can randomly decide to invade the land of the major players.