Engineers are continuing to assess a landslip that led to a railway closure and an 84-mile road diversion for drivers in Argyll.

The landslip, near the Falls of Cruachan, brought around 100 tonnes of debris onto the railway and further debris and boulders onto the road below.

The movement blocked the railway on the line between Falls of Cruachan and Dalmally and forced the closure of the A85 in both directions between Bridge of Awe and Lochawe on Monday.

Traffic Scotland confirmed on Tuesday that one lane of the A85 has reopened open under traffic signal control. 

Traffic Scotland said that the railway line on the Oban branch of the West Highland Line is “likely to be subject to an extended closure”.

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Network Rail said that the landslip occurred on Ben Cruachan’s lower slopes, 80 -100m above the railway line, bringing boulders, trees, and waterlogged soil down the mountain, covering the track, and reaching the road 30m below too.

It is carrying out assessments from the ground and from the air via helicopter, and has begun moving machinery into place to clear the debris.

It said it was too early when the railway will reopen.

Road maintenance and management firm BEAR Scotland is also conducting a safety inspection and liaising  with Network Rail as to the cause of the landslip.

Eddie Ross, BEAR Scotland’s Operating Company Representative, said: “Safety is our top priority, and a full assessment is currently being undertaken. 

“We thank the local community and road users for their patience and assure them we’re doing everything we can alongside our partners in Police Scotland and Network Rail, to address this challenging situation as quickly and safely as we can. 

“Road users should also check Traffic Scotland for the latest information.”