Rocket Dog and the Desolate City!

On a distant planet, Rocket Dog comes upon the remains of an ancient city. It's magnificent buildings, works of art, very culture have long disintegrated; crumbling back into the alien soil from which it came. It's once mighty inhabitants long gone: victims of their own conceit, they chose to focus upon the fulfillment of their own desires- neglecting the plight of their neighbors. Directing their energies inward, the world around them collapsed.