Stonehenge inner ring quarried an incredible 160 miles away

The smaller stones of Stonehenge's inner ring have been tracked to a rock outcrop in Wales, 160 miles from the famous site near Salisbury.  Geologists Ixer and Bevins did the rock science. How and why this happened 5000 years ago, no one knows.  The least astonishing explanation is they were transported 5000 years even earlier by a glacier.