Work is to begin on a £30,000 conservation project at Midhowe Chambered Cairn on the isle of Rousay.
The investment by Historic Environment Scotland (HES) will see the steel elements of a 33-metre long walkway structure restored, while climate-related corrosion will also be tackled.
Overall, the site is expected to reopen in December.
HES Head of Conservation North, Lucy Vaughn said: "Chambered cairns are not uncommon in the north of Scotland, but this is one of the best preserved examples thanks to careful conservation.
"That conservation can be a slow process, and in this case, it is lengthened due to the constraints at the site.
"We understand that there will be some disappointment for visitors to the island hoping to see Midhowe, but these works will ensure that that the site remains in an excellent state, providing a distinctive view of a Neolithic burial site for years to come."
(LM/MH)
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