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They also claimed that small pieces of debris found near Stonehenge, which were traced back to the dig site in Wales, were actually transported by the movement of glaciers over half a million years ago, and not brought by ancient masons along with the bluestones.
Stonehenge is considered wonder because having knowledge of giant structure like column and beam and erecting them without any technology is mystery and same follows for pyramids where no knows how that huge stones were moved with only human effort.