In this case I want to present to you an object I found in a context of oldest artifacts from the Kempen region- a basalt hammerstone and some basalt cores, together with chopping tools and a large cleaver - a round object which- according to me- has a great resemblance with our moon.
Now, after almost 6 years almost daily searching in gravel horizons, I never saw such a look a like piece before. It might be coincidentally they found at Bilzingsleben (Germany, Holstein, same period 400.000 BP) a carved bone with 14 small stripes ( moon- cycles? ). Maybe H. heidelbergensis was the first that was really thinking about the repeating patterns shown by the moon, sun and stars.
What is remarkable for this stone is, it is an imported piece that must have been found at an eroded surface, as I found it is of a tertiary age but I found it within the assemblage of pebble tools." -Jimmy Groen
Here is a link to the third article in an interesting series, by Chantal Jègues-Wolkiewiez (France), Paleolithic techniques and tools used to calculate space and time.