By bizn_fun 
Sir David said: “People know and love the Simonside Hills that rise here, they walk the ridges and listen for the calls of the curlew, they watch for red squirrels and admire the views as they scramble among the crags.
“They walk along its remote paths and marvel at the astonishing rock carvings left by our distant ancestors, who once lived here.”
He said the Wildlife Trusts would work with local farmers and communities who lived and worked at Rothbury to care for the area, breathe new life into its habitats and create a place where people and nature could thrive side by side.
“Please help us make this vision a reality,” he added.
About £8m, in donations ranging from £5 to £5m, has already been raised, but the race is on to secure the remaining two thirds. A fundraising appeal has been launched online.