Volunteers planted dozens of trees on a lake's shores as part of a scheme to reduce threats to wildlife.
The lake is home to rare species of fish and birds
Bassenthwaite Lake is shallow and suffers from excessive sediment running off hillsides, which poses serious threats to plant and animal life.
About 150 trees were planted with the idea the roots will stabilise soil on hillsides and stop loose earth seeping into water courses leading to the lake.
A 20-year action plan has been set up to restore the lake's water quality.
'Filling up quickly'
Native species such as oak, ash, hawthorn, hazel and holly were planted by the volunteers.
The event was organised by Grampus Heritage Training, Cumbria Woodlands, the Forestry Commission and the Lake District National Park Authority.
Grampus director Martin Clark said: "One of the main problems at Bassenthwaite is that it's filling up too quickly with sediment running off hillsides.
"Woodlands will help halt this water run-off and make the soil more stable - so less ends up in the lake."
In October last year, the Heritage Lottery Fund awarded the project £1.9m to help return the water to the quality it was before World War II.