This always made me wonder. The gate? To their fallen kingdom and lost glory? A different shattered structure? Or something like that? Also, the crown above, makes you wonder what kind of significance it holds. I wish the game delved a bit more into the Dourhands origins... perhaps there is still an opportunity for that... with Brathar...
My interpretation is Skorgrim, leader of the Dourhands.
looks more like a door with a broken archway or something
in the past I've also entertained the possibility the crown is Iron Crown but... nah, they wouldn't advertise themselves as Angmar's slaves and take pride in it, that's not what they were all about (as peoples)