From the BBC Website, 24th January 2005
Engineers abseil to repair castle
Repairs are being carried out at Knaresborough Castle after movement in the soil and rock which supports the 800-year-old building.
A survey has found that work is needed on the cliff that supports the castle, high above the River Nidd in North Yorkshire.
Specialist engineers will abseil down the cliff as they stabilise the site using rock bolts and soil nails.
It is expected the job will take three to four weeks to complete.
"Knaresborough Castle is a tourist treasure among many tourist destinations in our country," said Councillor Pat Jones from Harrogate Council which is responsible for the castle.
"So we apologise for any inconvenience that these works will cause to both residents and visitors."
For safety reasons, the road which runs below the castle beside the river has been closed for a short stretch and decking has been put up to protect pedestrians.
I visited Knaresborough in October 2004, so I can picture the place well.
The local website is http://www.knaresborough.co.uk/castle/