The Forth Bridge is set to join a number of Edinburgh buildings and those around the world in switching its lights off to highlight the battle against climate change.
A spokesman for Historic Scotland, the agency responsible for the care and maintenance of the castle, said a decision on whether to keep any mesh in place in the “long term” would not take place until initial works had been completed. The spokesman added: “The precautionary measures are designed to identify and secure areas of rock which might be at risk of coming loose.
“It is the latest stage in an on-going monitoring, care and maintenance programme which aims to conserve the castle rock in the best possible condition and minimise the number of rock falls which are the inevitable result of the natural erosion which has been taking place for millions of years.”
David Storrar, regional architect for Historic Scotland, added: “The castle rock is a national treasure and we carry out regular specialist maintenance work to protect it and maintain rock stability.
“Our consultant engineers recently identified eight areas on the north-west face where it would be prudent to carry out precautionary stabilisation work.
“This will involve drilling into the rock and inserting stainless steel pins to keep it firmly in place.”
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