Mountain Ash has a population of around 7,039.

Mountain Ash lies within the historic county boundaries of Glamorgan.

Mountain Ash hosted the National Eisteddfod in both 1905 and 1946.

Unusually for a eucalypt, Mountain Ash does not regrow after fire.

The 2009 race attracted over 800 runners, and 10,000 people into Mountain Ash for the associated entertainment.

After lighting a torch, it is carried to the nearby town of Mountain Ash, where the main race takes place.

Similar to the Mountain Ash, inflorescences are often paired.

She has lived for many years in Mountain Ash, near Aberdare.

Manfield was born in Mountain Ash, the son of a railway worker, and went to school there.

The fight took place at Mountain Ash on 23 August 1909.