Like the peak of Knocknadobar to the west, it has been a Christian pilgrimage site since pre-Christian times.

[2] In the November 1913 issue of the Kerry Archaeological Magazine, M. J. Delap reported that pilgrims came from as far as Limerick.

The larger cairn, which has a diameter of approximately 30 metres, is known as Laghtfinnan and may have been erected in prehistoric times.

On top of the cairn, there is a leacht with an Ogham inscription on it that reads [...] MAQI R[...], signifying that the name of the commemorated person's father began with the letter R.[4] Cahircanaway (also written as Cahir-Canaway),[5] the smaller of the two cairns, is 2.5 metres high.

[2] A section of the Kerry Way known as the Butter Road traverses the northern slopes of Drung Hill.