[7] In a paragraph on Brecknockshire, John Leland's 1536–1539 Itinerary notes that: Blak Montayne is most famose, for he strecchith, as I have lerned, his rootes on one side within a iiii.

[12] This implies that "Brecknock Beacons" referred to only three summits, including Pen y Fan and Corn Du.

To the northeast of the ridge, interspersed with long parallel spurs, are four cirques (Welsh: cymoedd, sing.

The Brecon Beacons range, Fforest Fawr, and Black Mountain form a continuous massif of high ground above 300 metres (1000 feet).

The railway's starting point at Pant is located two miles (3 km) north of Merthyr Tydfil town centre.

An army captain had been found dead on Corn Du earlier in the year after training in freezing weather for the SAS.