from the Background:
The great indentation in terra firma occurred sometime recently, when a titanic being from some unknown dimension physically manifested itself in this universe. For several weeks, the entity thoughtfully considered the surface world from this vantage point, concluding that nothing worthy of serious interest existed here. Before setting off into the heavens, the colossal alien made ready by sloughing off superfluous trans-dimensional tissues and remaking itself into an entirely non-material being. It left behind only this single “footprint“.