Presumably these gate-pillars were erected 200 or more years ago,
when the width between them was designed just for horse-drawn vehicles?
ADDENDUM July 7th:
Work continues on the damaged gate-pillar.
Only traditional mortar - sand and lime - is being used, instead of sand and modern cement.
It was also brought to my attention that the pillar on the opposite side of the entrance
had also been damaged.
Lifting machinery is being used for lifting each piece of granite into position.
One wonders how the lifting of such pieces was carried out in the past
when the material was being quarried and transported from the distant
Blackstairs or Wicklow mountains, surely by horse and cart?