A helicopter will be used to connect overhead wires between a new line of massive pylons in the north.
With the pylons south of Fort Augustus now complete, engineers at Scottish and Southern Energy are moving on to the next stage of the multimillion Beauly to Denny project.
A helicopter will assist wiring up the pylons between Auchterawe Substation, Loch Uanagan and Culachy Estate.
The aircraft will fly just 164ft off the ground as it takes lightweight ropes between the pylons. The ropes will be attached to a heavy duty winch which will pull the heavy wires over the length of the route.
Then the 12 aluminium electrical overhead wires and a single earthwire will be pulled into their final positions.
On completion of the winch operations, trained linesmen will secure the wires to the glass insulators that hang from the arms of the towers.
Seven ropes are needed along the 2.5mile route, with one flight per rope taking place over a number of days. While it is planned to carry out the operation between May 13 and 16, the use of the helicopter is dependent on weather conditions to ensure the operation is carried out safely.
As the helicopter crosses small roads, pathways and the Caledonian Canal, members of the public may be stopped to ensure their safety.
John Buchan, overhead-line project manager, said: “We have planned the operations to ensure that the safety of members of the public, and our staff, can be managed properly.
“We would like to apologise to the public in advance for any inconvenience caused by the brief delays that may be experienced when our helicopter is in operation.
“To ensure the disruption is minimised, we will be erecting scaffolds and netting to enable the use of the A82 to continue whilst we are pulling the wires.
“Ground staff and spotters will be used to ensure the operation can be carried out safely, and to manage communication with members of the public.”