Groß Pampau, GR, c. 500,000 BP, Site, Characteristic Tools, Bifaces / c)ohlepitworks
Comment: (top) Stone material from Mindle moraine on conveyor headed to crushing machine. (bottom) The conveyor presorts stones into piles by size. Unless artifacts are retrieved on the initial dredging conveyor, they are sorted. Ironically, this has an advantage; it allows comparison of stereotypical iconic shapes across the size spectrum (microlithic to macrolithic). Among the piles of sorted stones, one may spot occasional clusters of stones that appear to be human-made artifacts.
Photo © Ursel Benekendorff. The site is documented in Benekendorff, U. (1990). From the information recorder stone to a picture book of the stone age. Archaeologische Berichten 20:14-28 and 43-65 (Elst, NL).