Pen-y-crug from the edge of Brecon via Maen-du Well. The upper slopes are open access for walkers. A small car park off the minor road to its north provides a convenient starting point for many walkers. The summit is crowned by an impressive Iron Age hillfort, one of several in the Usk Valley. There are the remains of a brick and tile works dating from Victorian times on its southeastern flank. Pen-y-crug Pen-y-crug is a hill in the Brecon Beacons National Park in the county of Powys, south Wales. It is commonly referred to locally as simply 'The Crug' ("pronounced cree-g").
Tal y Fan 2,001 feet, confirming its status as a mountain. Bwlch y Ddeufaen separates Tal y Fan from the main Carneddau ridge, the closest summit on which is Carnedd y Ddelw. Pen y Castell is directly opposite to the south. Tal y Fan Tal y Fan is an outlying peak of the Carneddau mountains in North Wales. It is one of the four Marilyns that make up the Carneddau, the others being Carnedd Llywelyn, Pen Llithrig y Wrach and Creigiau Gleision. It is high, and lies midway between the Conwy valley to the east and Penmaenmawr on the coast to the north-west.