Fig. 9From: The assessment of quantitative risk to road users from debris flowDebris flow events with known locations and signs of instability determined from the aerial photography. Locations of the drainage channels at the A85 Glen Ogle as confirmed by field reconnaissance are also shown. Base aerial photography reproduced by permission of Ordnance Survey, on behalf of HMSO,© Crown copyright and database rights, 2020. All rights reserved. Ordnance Survey Licence number 100046668Back to article page