Llyn Mawr

Llyn Mawr Nature Reserve

Llyn Mawr Nature Reserve © MWT

Golden-ringed Dragonfly at Llyn Mawr

Golden-ringed Dragonfly at Llyn Mawr Nature Reserve © MWT

Watery wonderland

Location

Two miles north-west of Caersws on the lane to Bwlch y Garreg
Caersws
Powys
SY17 5NE

OS Map Reference

SO009971
A static map of Llyn Mawr

Know before you go

Size
17 hectares

Entry fee

No

Parking information

Park in the small car park in front of the bungalow on the left of the lane

Grazing animals

No

Walking trails

Short area of boardwalk, other ground can be wet, muddy & uneven. Style access onto reserve.

Access

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.

Dogs

On a lead

When to visit

Opening times

Open at all times

Best time to visit

October to February, June to August

About the reserve

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

Contact us

Montgomeryshire Wildlife Trust
Contact number: 01938 555654
Contact email: info@montwt.co.uk

Environmental designation

Site of Special Scientific Interest (SSSI)