[2] It consists of numerous monuments and earthworks—prehistoric and medieval—including a probable megalithic tomb, burial mounds, enclosures, standing stones, holy wells and a medieval road.

They include a probable megalithic tomb, burial mounds, enclosures, standing stones, holy wells and a medieval road.

They date from the Neolithic to the early Middle Ages, showing that the site has been the focus of human activity for about 5,000 years.

[4] On the southwest side of the hill is a large, oddly-shaped limestone rock; a glacial erratic almost 6 metres (20 ft) tall and thought to weigh over 30 tons.

[7] In Irish it is called the Ail na Míreann ("stone of the divisions"), as it is said to have been where the borders of the provinces met.

This appears to have been "a sanctuary-site, in which fire was kept burning perpetually, or kindled at frequent intervals", where animal sacrifices were offered.

[4] There is also Tuar Uí Cobhthaigh / Toorcoffey (Coffey's Tower) named after the brehon law O'Cobhthaigh family who were known as the filí or ollamhs of Uisneach.

In Irish mythology, Uisneach is described as the sacred centre of Ireland, the burial place of Irish gods such as Lugh and the Dagda, the site of a sacred tree (the Bile Uisnig), and a place of assembly (the mórdáil Uisnig) associated with the druids, which, according to later tradition, was held during the festival of Bealtaine.

It is seen as a kind of omphalos or axis mundi of Ireland, a meeting place between the Earth and the Otherworld and the source of creation.

[9] The Dindsenchas ("lore of places") says that Uisneach is where the druid Mide lit a sacred fire that blazed for seven years.

[7] The tale Tucait Baile Mongáin ("Mongan's Frenzy") describes how a great hailstorm during an assembly on the hill created the twelve chief rivers of Ireland.