Eight mile walk around Gwynedd man-made lake surrounded by history ancient and modern
Llyn Trawsfynydd reservoir was built around 90 years ago and there's sights a plenty from almost every vantage point
Eight mile walk around Gwynedd man-made lake surrounded by history ancient and modern
Llyn Trawsfynydd reservoir was built around 90 years ago and there's sights a plenty from almost every vantage point