I have further developed the story and background for the scene. I am using norse mythology as the foundation.
In a distant future on a colonized planet in the distand realms of the known universe a 1000 centuries old prophecy has come true.
A final battle between humans and giants is taking place at the outskirts of Valhalla, the stronghold of the humans on the planet Midgaard. A cold and desolate land stretching infinitely across more than 70% of the planet. The lands used to be lush and green and the humans lingered there peacefully for eons. They build civilization and vast cities spread throughout the lands.
But one day everything changed as giants attacked without warning. they swept down from the mountains and caught the humans by surprise. The humans had no weapons to fight off such a thread and were easily defeated. Word spread quickly throughout the human world and even reached the homeworld. They spoke of giant people walking the cold lands of a distant planet, they spoke of a forgotten prophecy come true. They spoke of Ragnarok… the end of the world…
Warriors of the homeworld and countless colonies set off to aid their brothers in their fight for survival. The promise of fame and glory brought 1000s of warriors to the planet that was now changing into a cold icy worldas the giants conquered. Cities fell and civilization was coming to an end.
but then help reached the planet and a massive defensive plan was set in motion by elders of the Ragnarok Order that was gathering a huge momentum and support alone due to the threat of the giants.
The building of Valhalla became a symbol of this now age old confilct. Rising tall into the skies, challenging the giants in statue and power.
The statue of Thor and the worm of Midgaard protects the walls and towers of Midgaard and warns off any attackers.
It is still centered around the fortress 3d sketch I made and its still a cold intimidating world. BUT I have allowed myself to use light as the symbol of hope and it will be used in this scene with the statue of thor and defending human armies.

