Carved stone

I found these 2 stones about 3 weeks ago. The first one I think may have been used as an eating tool as I have 4 others similar. The next stone is one that seems to have lots of carvings on it that Miyake up a story. I have taken several pics ALL OF THE SAME STONE only different sides . U guys take a close look and tell me what u think. This is actually one of the very distinctive stones I would group together as extremely obvious details of human touch.[You must be registered and logged in to see this image.]
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More of the last stone [You must be registered and logged in to see this image.]
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Last 2 pics[You must be registered and logged in to see this image.]
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Of course in the pics u just can't get the fine details of the art.