Walkers are being advised of tree-felling works at two Aberdeenshire woods.
The Forestry Commission is warning visitors to Dunnottar and Denlethen Woods to be aware of the work, which is due to begin next week.
The felling work begins in Denlethen on Monday and will take about two weeks.
The team will then move on to Dunnottar Woods on October 6. The work is expected to take four weeks.
Forestry Commission spokeswoman Emily Holmes said: “The thinning work we’re doing will improve the range and health of habitats and will also make them more attractive places to visit but while we are working there, visitor safety is paramount.
“Some of the trails will be closed during this time – and we apologise in advance for any inconvenience – but it’s necessary so that the machines can work in the areas safely.
“It’s important that everyone observes the instructions on any signage that we put up. Because these are big, noisy machines and our team will not see people – or dogs – that wander into the working area.
“It’s also quite scary how little warning you get when a tree is coming down.”
Following the initial closures, several areas of the forests will be inaccessible with diversions in place.