For my tentative entry I thought i'd try something Sci-fi (not my usual cup-of-tea); a geologically-active satellite. the red is magma between plates of metal that move about like accelerated tectonics. gems and ore is common along the 'shores' of these plates, which is why its been chosen for mining operations. Locations and further info still to be added.
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http://i184.photobucket.com/albums/x.../challenge.jpg

