Clones

Tigernach's monastery of the 6th century, with a round tower, a high cross whose shaft was cut between 825 and 875, and a stone sarcophagus said to be the saint's. The town is nearly surrounded by the border, and St Tiernach's Park is where Ulster football finals are played.

St Tighearnach founded the monastery of Clones in the 6th century and became its first bishop while keeping the see of Clogher, and his cult spread across the diocese and beyond. Augustinian canons settled here in the 12th-century reforms, but the office of coarb stayed in families like the MacMahons until the 16th century. The Normans built a motte here in 1211 but did not stay. In 1641 the MacMahons' rebels burned planters' property, and at least 34 settlers and dozens of rebels were killed.

On 11 February 1922 the IRA challenged a unit of Ulster Special Constables changing trains at Clones station; one of the constables shot an IRA sergeant dead, and in the gunfight that followed four Specials were killed. The Clones Affray threatened open conflict between North and South and briefly halted the British withdrawal. On 28 December 1972 a car bomb exploded on Fermanagh Street.

Drawn from the History section of the Wikipedia article on Clones ↗, rewritten here and adding nothing it does not say; licensed CC BY-SA 4.0.

• Clones · round tower · under 1 km
• Castle Saunderson · castle · 10 km
• Crom Castle · castle · 14 km

Straight-line distances from the town centre, from each site's documented coordinates.

• The Black Pig’s Dyke · A huge black boar tore up the ground with its tusks, and the ridge it threw up runs yet — in broken stretches across Leitrim, Longford, Cavan, Monaghan and Fermanagh. The boar is folklore; the bank is not. Timber from the Monaghan stretch dates to 390–370 BC. This pin marks one length of a very long thing.

All of these are pinned on the Hidden Ireland map.