Cilsanws Nature Reserve is owned by the Merthyr & District Naturalists Society and is completely open for you to explore and enjoy.

There are a few ways to access the area, situated on the south western side of Cilsanws Mountain.

By travelling through the village of Cefn Coed, heading towards Trefechan, you can access the reserve via Cloth Hall Lane and Merthyr Tydfil Golf Course Car Park.

Larches and Scots Pine grow along the Western margins of the reserve, with more unusual rowan or mountain ash trees springing up on the higher ground. The Rowans attract species such as thrush, starlings and blackbirds, and swifts, swallows, house-martins, buzzards and kestrels are commonly present.

If you are lucky, you may catch a glimpse of a rare peregrine falcon flying by.

Mammals are shy but are present - field mice, bank voles and common shrews live in the reserve and there are an abundance of insects and butterflies, so important to the balance of the reserve.