Helicopters have been brought in to assist with a Cairngorms conservation project.
They have been transporting 130 tonnes of material to repair upland paths in remote areas of the Angus glens.
Nearly £300,000 worth of footpath work will be undertaken over the next four years as part of the Mountains and the People Project, led by the the Cairngorms Outdoor Access Trust (COAT).
Work is under way on both Mayar and Bachnagairn, two of more than 40 routes to be improved with more than 70 miles of paths and associated habitats being restored.
COAT spokesman Gordon Paxton-White said: “We have seen the delivery of 160 bags of locally-sourced path construction materials plus replacement bridge components for the Roy Tait Memorial Bridge, to two of our high priority sites.
“Over the coming weeks we will work with contractors to tackle generations of erosion on these popular routes. Work in such remote locations can be challenging and at times dangerous, however by working closely with highly-skilled specialist mountain path contractors we are able to deliver high quality, durable and sensitive path repairs.”