This is a still from an animation called 'Cerulean' that I made in my final year at university. It's about an ancient Atlantean golem called the Sentinel who returns to the ruined city on the bottom of the ocean, in search of others of his kind.

This still is from a scene where the Sentinel stands on the top of a cliff and looks down upon the sunken city.

The whole animation can be seen on my website... but it's not very good.