In the middle of the Carmarthenshire countryside lies Llyn Brianne Dam and Reservoir with a huge spillway to the River Tywi. The dam is the UK's tallest, standing at a height of 300 ft (91 m) and has excellent hiking and biking opportunities in and around the reservoir.
The main way to access the route is by car as it's a scenic 11-mile drive from the market town of Llandovery through a rugged river landscape. You can also hike or bike to the reservoir and dam if you are feeling adventurous.
This scenic dam regulates the River Tywi in the Cambrian Mountains and impounds water supplies for south Wales. It's believed to be the tallest of its type in Europe and the highest in Britain. A hydroelectric power station was also added 25 years after the dam was completed.