A very interesting site in the US that appears to be a large geoglyph or a man-made enclosure (undisclosed location).  The geoglyph is perched precariously atop a mountain and sits approximately 740 feet above the surrounding landscape resembling the shape of a fish.   The length is around 80 feet and the width is approximately 20 feet.   The two darker black areas are a different material than the surrounding landscape and could indicate the material is a type of volcanic or dark-colored sediment that was either brought in or altered to appear dark.  The surrounding landscape does consist of some darker colored sediment but this particular mountain is made of a different material.  The darker sediment was either hauled in on purpose or the existing sediment was altered to appear dark.  By altering the sediment I am suggesting there are indications this could be a smelter site as there are mine tailings dotting the surrounding landscape with campsites and wide-scale indications that mining was taking place in this vicinity.