Rapture

A really nice image, with an interesting concept.
As far as feedback goes, I really like the fade you have achieved through the pressure used when drawing. It really helps telling the foreground from the background. 
I do however miss seeing this applied to the submarines, as they seem equally dark, despite the size suggesting they are further apart. 
Another thing would be the lack of perspective, as the floor-tiles seem to bend a little and every building abide by its own law. If anything, I find it unfortunate as it ruins some of the depth created earlier. 
Still I believe it is one interesting piece, with a theme one rarely seem tackled in the pencil media.