Pen y Fan same noun "ban", in its plural form "bannau", is found in the Welsh name for the Brecon Beacons: "Bannau Brycheiniog". There is no one standard translation of "Pen y Fan", but 'the mountain's peak' or 'the beacon's summit' are both possible translations. Pen y Fan is formed from various units of the Old Red Sandstone which were laid down during the Devonian period. The lower slopes of the mountain are formed from the sandstones and mudstones of the Senni Formation whilst the upper slopes are formed from those of the Brownstones Formation. The very summit, like that of neighbouring Corn
Pen-y-Fal Hospital Pen-y-Fal Hospital Pen-y-Fal Hospital was a psychiatric hospital in Abergavenny, Monmouthshire, opened in 1851 and closed in 1996. It held up to 1,170 patients at its peak. The facility went under a variety of names: Pen-y-Fal was designed initially to house 250 patients. Its architect, Thomas Fulljames of Gloucester, assisted by Frederick Sandham Waller, chose the Tudor Gothic style using local old red sandstone with Bath stone dressings to animate its charming gathering of gables and chimneys. The property was set in grounds of 75 acres reflecting the medical thinking that outdoor space was an important aspect of treatment. There