Llwyn-on Reservoir, in the Brecon Beacons National Park, is the largest of three reservoirs in the Taf Fawr valley (Image: Matthew Horwood) 3 of 7 ...

Llwyn-on Reservoir 1 of 7. The Llwyn-on Reservoir in the Brecon Beacons looks a lot different from its usual appearance (Image: Matthew Horwood) Aerial view shows dramatic change 2 of 7.

It can be seen clearly owing to low water levels at the Llwyn-on reservoir in the Taf Fawr valley near Merthyr Tydfil Wales. The bridge has been under water at the reservoir since 1911, according ...

The bridge, thought to date from around 1800, has laid beneath the water of Merthyr Tydfil's Llwyn-On reservoir since 1911, according to Coflein, external, the National Monuments Record of Wales.

The bridge, thought to date from around 1800, has laid beneath the water of Merthyr Tydfil's Llwyn-On reservoir since 1911, according to Coflein, the National Monuments Record of Wales.

An old stone bridge which was submerged during construction of a reservoir a century ago has made a rare appearance following a record dry spell. The bridge, thought to date from around 1800, has ...

A dry spring has led to low water levels at the Llwyn-on reservoir in the Taf Fawr valley in Merthyr Tydfil, Wales (Image: Getty Images) ...

An old stone bridge which was submerged during construction of a reservoir a century ago has made a rare appearance following a record dry spell. The bridge, thought to date from around 1800, has laid ...

An old stone bridge which was submerged during construction of a reservoir a century ago has made a rare appearance following a record dry spell. The bridge, thought to date from around 1800, has laid ...

The bridge, thought to date from the 1800s, has lied beneath the water of Merthyr Tydfil's Llwyn-On reservoir since 1911, according to Coflein, the National Monuments Record of Wales.