Kyle Line services will be replaced by buses, and trains won't run on the Far North Line north of Lairg.
The Highlands' multi-agency emergency response to Storm Babet has moved onto the recovery phase – but its teams warn dangers still persist.
The intrepid group of 13, who have raised almost £58,000 for the hospice, enjoyed stunning views and wildlife encounters on day 1 of their adventure.
Hundreds of people in Caithness were hit by power outages on Sunday morning as the county recovers from the battering caused by Storm Babet.
A fresh weather warning has been issued for the Highlands by the Met Office.
A question hangs over whether some Highland railways will return to normal for the start of the working week after Storm Babet's impact was revealed.
'SIGNIFICANT' flood disruption is likely in Caithness and Sutherland as Saturday progresses, Sepa has warned amid heavy rain linked to Storm Babet.
Hundreds of Highland residents were without electricity on Saturday morning as Storm Babet continues to wreak havoc.
The road is closed in both directions between Alness and Tomich due to flooding, with the carriageway completely submerged near to the Tomich Café.
A new amber warning has been issued for parts of Caithness and Sutherland amid forecasts of up to 100mm of rain in places.
There were wide power cuts reported in parts of Sutherland, with further incidents reported to the south of Inverness and south of Aviemore.
People are being urged not to travel within or to areas covered by a red 'danger to life' warning, and have advised caution in amber and yellow areas.
A MAJOR international military exercise is to be held off the coasts of Sutherland and Ross-shire, the Ministry of Defence has announced.
Neither Caithness – or Highland as the council area – get name checked among areas facing an amber weather warning on new Traffic Scotland webpage.
The Met Office has also upgraded rain warnings for Caithness, Sutherland and Ross-shire to amber; after issuing a revised red alert in the Grampians.
The council said its roads department is preparing itself to respond to flooding incidents when the storm hits.
A separate yellow warning for rain elsewhere in northern Scotland has also been extended and now covers a large swathe of the Highlands and Moray.
Brace for flooding when Storm Babet hits the Highlands later this week, residents have been warned.
Unison has announced plans for a "rolling series of strikes", with specific dates set to be announced "in the coming days".
Two rain warnings have been issued for parts of the Highlands, with a third alert – for gales – covering virtually all of northern Scotland.