[Personal] The Wall

In a dream, I saw a massive wall made of light in space.  I'm not sure of its purpose, though I would like to add it to my Galaxy's canon.

Image © 2015 Traci Vermeesch
DO NOT copy, alter, repost, etc without the consent of the artist! Character/Image are NOT public domain!
Please think before you type...
and please read before asking questions. I will no longer be answering questions that can either be answered by simply reading the image's description or by spending 5 seconds to Google the answer.