Rathgall Hill Fort

Rathgall Hill Fort - Credit: Wikimedia Commons

Rathgall, (Irish: An Ráth Gheal) or the Ring of the Rath is a large multivallate hill fort near the town of Shillelagh. Dating from the Bronze Age, it consists of three roughly concentric stone ramparts with a fourth masonry wall dating from the Medieval period at its centre. Rathgall is a National Monument which is in state care. Read more on Wikipedia

type: ancient site
date from: 1200

Source: en.wikipedia.org