Castle-an-Dinas
OS grid ref:- SW 945 624
The Iron Age earthwork of Castle-an-Dinas near St. Mawgan stands 702' above sea level. The earthwork is generally thought to be one of the most significant hillforts in the British Isles.
It is thought to have been occupied circa 400BC to 150 AD.
The castle consists of four large circular ramparts. Two Bronze Age barrows are set in the the interior, the North barrow is now a hollow with a stone lying in it. Castle-an-Dinas is reached via a footpath from the roadside. The inner circle is around sixteen hundred and fifty feet by fifteen hundred and occupies a commanding position.
The site has been owned by Cornwall Heritage Trust since 1988. The Trust have recently put up info boards at the car park and up towards the fort. A panoramic plate was installed in the interior of the fort in June 2002, which amongst other local landmarks, points out the Nine Maidens Stone Row three miles to the North.