Mynydd Hiraethog (also known as the
Denbigh Moors) is an upland region in
Conwy and
Denbighshire in north-east
Wales, between
Snowdonia and the
Clwydian Range. It includes the large reservoirs
Llyn Brenig and
Llyn Alwen, and the
Clocaenog Forest, which has one of Wales's last populations of
red squirrels. Its highest point is
Mwdwl-eithin, at above sea level, making it higher than
Exmoor. Moel Seisiog is another 467m (1535ft) summit, which is also the source of the
River Elwy . On its western edge, overlooking the
Conwy Valley, lies the
Moel Maelogan wind farm. Three other summits reach over 500 metres-
Craig Bron-banog (502 metres),
Gorsedd Bran (518 metres), and
Foel Goch (Marial Gwyn) (519 metres). The ruined hunting lodge of Gwylfa Hiraethog known locally as Plas Pren after its original timber construction lies on the moors and nearby is one of the highest inns in Britain, the Sportsmans Arms. As well as the large reservoirs of
Llyn Brenig and
Alwen Reservoir there are four sizeable natural lakes-
Llyn Alwen,
Llyn Aled,
Llyn Bran and
Llyn y Foel-frech, as well as another reservoir-
Aled Isaf Reservoir (lower Aled Reservoir).