The Largest Ancient Man Made Canal System on Earth
These canals are too evenly spaced over too large an area to be any kind of natural formation. Based on entry and exit points, it is readily apparent this system is a very large, controlled agronomy array and/or aquaculture system. Its age is defined by the overgrown nature of the canals, as well as some areas that are covered over with drift and sand erosion.
I would suggest that depth of canal(s) must have been significant to compensate for general slight variations in elevation. There seems to be an average elevation variation of about 60', sometime more, and sometimes less.
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First brought to my attention by Gary Schoening Here is his original Vimeo post: http://vimeo.com/64351951