The Otay River channel as it passes under Interstate 5 in San Diego. Stumbled on this when out for a walk with Kim.
I thought it looks a lot like the Mines of Moria from the LoTR. This is a five frame panorama. Download size is 8100x2500. I'll be uploading this plus two more panorama's to my stock account for manipulating.
Now to get some lighting, and return at night for a really moody photograph.