A cairn will be placed at the top of a mountain range to commemorate three airmen who died in crashes in the area.
Ellard Cummings, Ronald Stewart and Brian Lightfoot all died when the planes they were in crashed into the Bennachie range in Aberdeenshire.
On the day the Second World War was declared, September 3, 1939, Cummings was flying with his gunner Stewart, 24, from RAF Wigtown to RAF Evanton in Easter Ross in a Westland Wallace biplane.
The 23-year-old pilot was flying through mist and crashed into Bruntwood Tap when he did not see it.
Thirteen years later, in February 1952, pilot Lightfoot took off from RAF Leuchars to carry out a low flying exercise in a Gloster Meteor jet. In the snow showers, the 22-year-old crashed into Oxen Craig.
The wreckage was buried by airmen from RAF Edzell. They also constructed a rough cairn using pieces of the aircraft.
This cairn has been rebuilt to include a plaque bearing the names of the three men.
On September 2, a conservation society is unveiling the new cairn and the ceremony will be attended by the family of the three men who are travelling from Canada, Yorkshire and other parts of Scotland.