The National Trust wants people in Yorkshire to do more to help preserve the region's natural heritage.
The organisation is asking people to donate money or time to the Yorkshire Moors and Dales appeal.
The appeal, which started 20-years-ago and has raised £2m, aims to fund continuing conservation work and improve public access.
The National Trust cares for more than 12,500 hectares (30,000 acres) of land in Yorkshire.
The organisation is responsible for some of Yorkshire's best-known landscapes including parts of the Yorkshire Dales in Upper Wharfedale and around Malham Tarn and the giant formations of Brimham Rocks, near Harrogate.
It also cares for large areas of the North York Moors including Bransdale, the Bridestones Nature Reserve and Roseberry Topping.
Janet Bibby, Director of the Yorkshire Region for the National Trust, said: "All of these amazing places are right on our doorstep here in Yorkshire and for that, we are so very lucky.
"At the heart of our work is the importance of striking a balance between the needs of conservation with those of public access."
Over the last 20 years, the campaign has supported ongoing projects including bracken control at Brimham Rocks and the rebuilding of miles of drystone wall in the Yorkshire Dales and North York Moors.
Ms Bibby added, "By supporting the Yorkshire Moors and Dales appeal with donations, or giving time as a volunteer, we can achieve so much more. We want to make sure these places can be enjoyed by future generations."