Glaslyn lake & blooming heather

Glaslyn Nature Reserve in August

Glaslyn in the snow

Glaslyn Nature Reserve in the snow

Cottongrass flowering at Glaslyn Nature Reserve

Cottongrass flowering at Glaslyn Nature Reserve in June

Glaslyn Nature Reserve is now open. Please note that the padlock code has changed, so members wishing to drive down the track to the car park will need to contact MWT well in advance (with your membership number), in order to give us time to get the new code to you.

283 plants
129 fungi/lichens
351 insects
58 birds
Wild, Welsh wilderness


The reserve lies off the minor road between the B4518 near Staylittle and the A489 at Machynlleth
SY20 8RE

OS Map Reference

A static map of Glaslyn

Know before you go

230 hectares

Entry fee


Parking information

Limited parking at layby by gate. 4x4 vehicular access to the reserve car park by the lake is available to MWT members; contact the office for the padlock code.

Grazing animals

Cattle & sheep

Walking trails

Areas of path wet & muddy, uneven in places. Wellies are essential after wet weather.


Contact the Trust for disabled access information.


On a lead

When to visit

Opening times

Open at all times

Best time to visit

June to August

About the reserve

Glaslyn is Montgomeryshire Wildlife Trust’s biggest nature reserve, an integral part of the Cambrian Mountains. The large expanse of heather moorland, with its associated boggy areas, surround an exposed upland lake. Spectacular views can be enjoyed from the viewpoint.

Glaslyn can be breathtaking at any time of year, but don’t miss June to August, when the reserve turns white with cottongrass, followed by purple with the flowering heather! Also look out for the lake’s speciality, quillwort, which often washes up on the lake shore after bad weather.

Why not make a day of it and follow the Glaslyn & Bugeilyn audio trail. To find out more and download the mp3 files, click here.

Follow this reserve on social media using #GlaslynNR


Please note that the landowner, in agreement with the Local Authority and Montgomeryshire Wildlife Trust, has revoked public vehicular access along the track that leads to Glaslyn Nature Reserve, due to persistent illegal activity in the area. As a result the gate at the entrance, off the road, has been locked with a combination lock. MWT members remain able to gain vehicular access through the gate to the reserve car park but will need to contact the office for the code before visiting the site (please note that this code will be changed periodically).

Alternatively, limited car parking space is available in the layby by the gate. Please do not park in front of the gate as access is required at all times for landowner and emergency vehicle access.


Glaslyn is a nature reserve. It is for the conservation of wildlife and for people to enjoy this wildlife. We do not permit swimming or water sports in any of the open water on our nature reserves. Whilst these activities may seem harmless, they can actually lead to the disturbance of wildlife, water pollution or the introduction of invasive non-native species or disease, as well as having the potential to affect the enjoyment of other visitors.

Contact us

Montgomeryshire Wildlife Trust
Contact number: 01938 555654
Contact email:

Environmental designation

Site of Special Scientific Interest (SSSI)