This thread made me think of this thread, so I thought I'd start it off again.
A quick review of the rules:
First person who identifies the location of the last satellite image follows that up with a new one. Please don't post an image unless you have successfully identified a previous one, because it gets messy and unorganized fairly quickly otherwise. Sometimes a vague hint can be useful. I encourage the person responding to provide some information about what is interesting or unique about the site, and maybe even supplement the answer with photos. If not, I encourage the person who posted the satellite photo to follow-up with the information. It's supposed to be a bit of a learning exercise.
This is a very important site. There are a number of features that you might identify in the image, but I am looking for the feature that makes this significant.