Allt Lwyd is a top of Waun Rydd in the Brecon Beacons National Park, in southern Powys, Wales.
The summit is heathery and marked by a small pile of stones. It is found at the end of Waun Rydd's south-east ridge. It overlooks Talybont Reservoir, and has the Talybont Forest on its steep flanks.Nuttall, John & Anne (1999). The Mountains of England & Wales - Volume 1: Wales (2nd edition). Milnthorpe, Cumbria: Cicerone. .
References
External links www.geograph.co.uk : photos of Waun Rydd and surrounding area