[3] The forest plantation on its northern slope, which is composed mainly of Sitka spruce, Scots pine and beech, is a habitat for Sika deer, hares, rabbits and foxes.

[4] It was once believed that Kilmashogue was the site of a battle between the Irish and the Vikings, described in the Annals of the Four Masters, that took place in AD 917.

[5] On the northern slopes, close to the forest recreation area car park, is the remains of a wedge tomb.

[6] It was excavated in 1953 by H. E. Kilbride-Jones, aided by Rúaidhrí de Valera and Seán Ó Nualláin, of the Royal Irish Academy.

[10] At some point during the Bronze Age, parts of the chamber were dismantled and used for the construction of three stone-lined cists which were inserted into the cairn material.

[19] On the northwestern slopes, in a field near the village of Rockbrook, are two standing stones, square in section and approximately 1.8 metres (5.9 feet) tall.

[21] Further down the northern slopes, lying in a housing estate near Marlay Park, is another portal tomb, known as the "Brehon's Chair".

[26] It was originally known as Hollypark and was built near the end of the eighteenth century by Gerald Foot, a wealthy snuff merchant.

[27] In his A History of the County of Dublin (1905), Francis Erlington Ball states that the barrier of The Pale ran along the northern slopes of Kilmashogue near the college and that the remains of a castle, held by the Harold clan who owned the lands for many years, could be found nearby.

There is a Coillte-owned forest recreation area on the northern slopes, along Kilmashogue Lane, which is managed by the Dublin Mountains Partnership.