The major makeover of the castle was begun in spring 2006

The National Trust is calling on visitors to Corfe Castle near Wareham, Dorset, to give extra donations to help pay for the second phase of work.

The major makeover was begun in spring 2006 to shore up crumbling masonry in the Gloriette and inner ward sections.

Work will now see the top of the Keep walls capped with turf to protect them.

We need people to dig deep and donate to the appeal Pippa Russell, the National Trust

Plasterwork will also be repaired and loose sections of stonework will be pinned and re-pointed.

The two-year project, which is now halfway through, is designed to restore full safe public access to the top third of the castle, which has been damaged by recent warm, wet winters.

Pippa Russell, the trust's visitor services and enterprise manager, said: "We hope that everyone will appreciate how important it is for us to get the repairs completed urgently.

"Due to the specialist nature of the work, it is a time-consuming and costly project.

"The admission fees will help contribute, but we also need people to dig deep and donate to the appeal, so that we can ensure that the castle is made safe again for visitors and no more parts of this amazing monument are lost."

It is hoped the Keep will be repaired by spring 2008.