Gwynedd landslide leads to 20-mile detour
Motorists face a 20 mile (32km) detour after a landslide left large rocks on the A487 in Tal-y-llyn pass in Gwynedd.
Clearance work is under way but the road is expected to remain closed for some days following the landslide at around 0320 BST on Monday.
The south Gwynedd road is the main route to Machynlleth from the Dolgellau area.
Traffic is diverted via the A470 through Dinas Mawddwy as the road is closed from Cross Foxes to Dyfi bridge.
A Gwynedd Council spokesperson said two boulders and some smaller rocks had fallen onto the road, about two miles (3km) from the Cross Foxes on the Tal-y-llyn Pass.
"An assessment is being undertaken this morning to ensure that the road is safe, and officers from the council's highways and municipal department will arrange to clear the road, " he added.
"In the meantime, traffic is being diverted through Dinas Mawddwy via the A470."