Pengelli National Nature Reserve is part of the largest block of ancient oak woodland in West Wales.
Species found in this rich woodland include badgers, polecats and the elusive dormouse.
[1] The woodland was owned during Elizabethan times by the Pembrokeshire historian George Owen of Henllys.
In 2021, the Wildlife Trust of South and West Wales (WTSWW) purchased the adjacent 33-acre Pencnwc Mawr Wood.
A further 13 acres of adjacent land was purchased by WTSWW in 2023 with the intention of expanding the woodland.