Two waterfalls over weirs

Just above a stone building and filter beds are these two weirs. The river Afon Sawdde, (River Sawdde) starts at the lake above called Llyn y Fan Fach, "little lake (near) the peak". Covered in mist above the lake is the mountain Bannau Sir Gaer which is in the Black Mountain region of the Brecon Beacons – Bannau Brycheiniog, Wales.