Network Rail Scotland has released this drone image of the landslide that trapped a train on Monday.
The 6.03am Mallaig to Queen Street service hit the landslide and the front carriage was derailed by the debris.
Since Monday, geotechnical engineers have been assessing the damage on the mountainside and carrying out survey work on the slope.
Work to clear the landslip from the line will only begin once engineers have completed checks, including aerial inspections, to ensure the slope above the railway is stable.
A Network Rail spokesperson said: ”Engineers spent yesterday carrying out survey work on the slope, on foot and from the air, to identify any further unstable material.”
”Once we are confident we can safely work at the bottom of the slope, we will begin the recovery operation to remove the train and repair the track.”