Know before you go
Manylion parcioPark in the small car park in front of the bungalow on the left of the lane
Short area of boardwalk, other ground can be wet, muddy & uneven. Style access onto reserve.
Access is limited to one small area of the lakeshore. Short area of boardwalk, other ground can be wet, muddy & uneven. Contact the Trust for disabled access information.
When to visit
Amseroedd agorOpen at all times
Amser gorau i ymweldOctober to February, June to August
Am dan y warchodfa
The name 'Llyn Mawr' means 'big lake' in Welsh and it's this upland lake which forms the centrepiece of the reserve. The clear, unpolluted water supports a range of aquatic plants, such as Bogbean and Yellow Water-lily and even Quillwort, a rare plant in Montgomeryshire. The large expanse of open water provides the perfect refuge for water birds, such as Tufted Duck and the occasional winter visiting Whooper Swan.
The lake is surrounded by wetlands, supporting a range of bog, marsh and wet woodland communities. Visits on warm, sunny summer days can reward you with an abundance of dragonflies, damselflies and butterflies.
Llyn Mawr is designated a Site of Special Scientific Interest (SSSI) in recognition of the special lake and bog habitats.
Follow this nature reserve on social media using #LlynMawr