http://elderscrollsonline.com/en/news/post/2014/02/11/creating-eso-dark-anchors

Nice little write up and video.

I really like the concept artwork of the anchors in the second image. The Dark anchors spread outwords and attach to parts of the world (like buildings and mountainsides). It makes them look huge.

Then look at the third picture of them in game. All three large anchors land on the same tiny alter directly beneath the portal. It just makes the dark anchors loose that massive feel earth (nirn) gripping feel. Just my opinion.