This is based on a thumbnail sketch I did almost 2 years ago. (http://www.andreasrocha.com/gallery/scene_rough/090126_4_concepts.htm). Again, you can make up any story you like as I believe that is what fantasy is all about. It could be a gathering of monks, a satanic ritual, a portal...whatever you like.
I hope you like it...and Merry Christmas and wishes of a Great 2011!