Coed y Felin or Mill Wood is the name given to the land acquired by the Woodland Trust in 1999. Through the "Woods on your doorstep" scheme, the trust's Millennium Project to create 200 new community woods, the woodland was designed and planted in the year 2000.
Coed y Felin or Mill Wood was given its name because it is adjacent to the old corn mill in the valley below. This medieval mill ceased working after the First World War, but the remains of the buildings can be seen where a path crosses the River Alyn.
The Millennium Woods were originally called Coed Nant Gain, and were owned by Lord and Lady Simey (he was Professor of Social Science at Liverpool and Lady Simey was Patrick Topley’s unofficial godmother). Patrick and Will Topley used to stay in one of the chalets before the family discovered Brithdir Mawr, and Patrick helped the Simey's son Lliffe with the excavation of the caves at lower end of the glen where there is rumoured to be the treasure of the Celtic princess Cain!
You can walk from the roadway though the woods and continue along paths coming out at the top of Trial Hill.