Immediately southeast of Letterfrack, Connemara National Park spans 2000 dramatic hectares of bog, mountains, heath and woodlands.
The park encloses a number of the Twelve Bens, including Bencullagh, Benbrack and Benbaun. The heart of the park is Gleann Mór (Big Glen), through which the River Polladirk flows. There's fine walking up the glen and over the surrounding mountains along with short self-guided walks.
Guided nature walks led by park rangers depart from the visitor centre.