A trunk road through Argyll has been hit by a “significant landslide” for the second time in a matter of weeks.
The route was shut for five weeks following a 10,000 tonne landslide in August, only reopening on Monday.
The nearby old military road is also closed, meaning motorists will have to follow a 59-mile (95km) diversion.
Bear Scotland said both routes will remain closed until a further assessment is complete and it is considered safe.
Forecasters warned of 25-50mm (1-2in) of rain in many places, with rainfall totals reaching 130mm (5in) on higher ground.