[2][4] The mountain is in south-west corner of Ireland standing against the prevailing south-west winds carrying rain from the North Atlantic; thus Knocknadobar absorbs significant water, and in places, freshwater literally springs out of the ground like a Well.

[7] Even before Christian times, in the 5th-century, the Knocknadobar was a place of celebrations for Celtic Lúghnasa Festivals in August.

[7] Lúgh (pronounced Loo) was the god of the Harvest, and festivals or dancing and merriment were held on high ground to make offerings for a good harvest, and Knocknatobar's wide flat summit provided a suitable venue.

[2][7] The full Cnock na dTobar Pilgrimage Path takes circa 3.5 hours to complete the 9-kilometre route, and is part of the National Pilgrim Passport scheme run by Pilgrim Paths of Ireland.

[8] The flat summit offers views of other major pilgrimage sites: Mount Brandon, and Skellig Michael.