A new study has found the exact origin for some of Stonehenge's
oldest stones. The rocks, which may have been part of the inner ring and "horseshoe" portion of the ancient landmark, are now confirmed to have come from an outcropping of rocks in Wales
called Craig Rhos-y-Felin
in north Pembrokeshire -- some 160 miles from Stonehenge. While the research is a worthy discovery in its own right,it could give some clues about how the massive stone circle was constructed.