Tŷ Canol Woods are an ancient woodland in the Tŷ Canol National Nature Reserve which lies south of the village of Felindre Farchog, Pembrokeshire, Wales, between the Preseli Mountains and the north Pembrokeshire coast.
After the glaciers made their final retreat from Wales around 11,500 years ago, it took time to transform the barren landscape into a lush woodland.
But gradually Arctic plants were joined by shrubs, then progressively birch, Scots pine, oak, alder and hazel trees colonised.
1,000 years later the woodlands started to diminish in size and number thanks to natural and human influences.
[1][2] Biofluorescence, seen under UV light under the dark sky, is a feature that has led the wood to be described as "...one of the most magical and special woodlands in the UK.