Tal y Fan is an outlying peak of the Carneddau mountains in North Wales. It is one of the four Marilyns that make up the Carneddau, the others being Carnedd Llywelyn, Pen Llithrig y Wrach and Creigiau Gleision. It is 610 m high, and lies mid-way between the Conwy valley to the east and Penmaenmawr (...) (from Wikipedia)