doorstone การใช้

• Drumanone Dolmen has portal stones more than 2m high and a doorstone about 2m high.
• The capstone rests on a doorstone and a cushion stone on top of the backstone.
• An up-growth of vines and other plants rises over the base of the doorstone at the front, and encloses the rear of the structure.
• The portal stone supporting the back of the capstone has collapsed, allowing the capstone to slide backwards out of position, causing the doorstone to collapse also.