Carreg Coetan Arthur is the name of a neolithic dolmen near Newport in North Pembrokeshire, Wales. Carreg Coetan Arthur dates from around 3000 BC and is the remains of a Neolithic burial chamber (also known as a quoit). The remains consist of a 4 metre long capstone on smaller supporting rocks. It would have originally been earth covered but this has eroded away. The site is managed by Cadw and it is a scheduled ancient monument.
Twmbarlwm Tump above Risca, South Wales, UK - On a clear day 7 counties are visible from this vantage point - the first mountain (at 1300ft) in Wales. Gwent - Brecon - Monmouthshire - Avon - Somerset - Gloucestershire - Herefordshire