Specialist climbers are to scale a basalt outcrop 90 metres above the Antrim Coast Road to install netting in a £130,000 scheme to prevent rock falls.
The A2 Coast Road at Garron Point will be closed for 10 weeks while the specialist contractor installs 2,800 square metres of netting in a bid to stabilise the heavily weathered rock face.
The road offers one of the most spectacular drives in the UK - but is also one of the most hazardous because of the danger of rock falls. In recent years it has experienced rock falls near Carnlough, a landslide at Glenarm, and sea defences have been washed away at Ballygally.
The instability of the rock faces has been blamed on natural weathering processes combined with the crude blasting techniques used in road's construction in the 1840s.
While the latest work is carried out at the southerly end of Garron Point, traffic will be diverted along Tower Road.