Clegir Mawr

Clegir Mawr Landfill is situated 1km NW of the village of Gwalchmai on the Isle of Anglesey. It covers an area of approximately 38 acres of landfill and surrounding scrubland which was filled with thousands of tons of household and commercial waste until it was closed in the 1980s.

It now has approximately 20 acres of beautiful orchid filled wildflower meadow, 5000 new trees and shrubs, six new ponds/wetlands and teems with rich biodiversity. The increase in biodiversity has resulted in an increase in reptiles such as Slow Worms, and the rare Great Crested Newt, as well as multiple sightings of Red Kite, Buzzard, Kestrel, Goshawk and Sparrowhawk. The site is rich in wildlife and diverse habitat making it a repository for diversity and abundance which can spread to surrounding habitats.

Did you know...


Hedgerows and woodland provide food and shelter for many species, they also act as essential corridors for wildlife to travel. We have planted hedgerow trees and shrubs in specific areas to help link habitat patches. Along with that we have also installed bird boxes, bat boxes and barn owl boxes.

It is estimated that 97% of wildflower rich meadows have been destroyed since the 1930s. We have established 20 acres of wildflower grassland and meadows which are essential for wildlife including bees, birds, butterflies and bugs.

Native woodlands are critical in the fight against climate change and nature loss. Providing new essential habitat for nature to flourish is essential. We have created multiple new habitat areas and planted ‘the right tree in the right place’ - nearly 5000 trees and hedgerow shrubs have been planted across the site to help lock up carbon, reduce pollution and improve water retention on site to help prevent flooding.

Half a million of Britain’s ponds have been lost over the last hundred years. We have created new wetland habitats of varying depths and have reprofiled existing soakaways. Our ponds are a unique biodiversity resource, rich in species of plants, invertebrates and amphibians.

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Nature Recovery Timelapse

Clegir Mawr, Anglesey, North Wales, UK

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Nature Recovery Timelapse

Clegir Mawr, Anglesey, North Wales, UK

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