Photo credit: Deutsches Archäologisches Institut. German Archeologists have discovered right next to the "Hajar Al Hibla" in Baalbeck, or the stone of the pregnant woman, the biggest known ancient stone block. The stone is more than 20 meters long and weighs 1,650 tons. It was meant to be transported without being cut but archeologists will need to extend the trenches to determine its exact height. Baalbeck is one of the largest Roman sanctuaries known and…