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A park ranger has told the BBC a "devastating" wildfire on the Isle of Arran was likely caused by a glass bottle being discarded amongst litter.
The wildfire – which started last Thursday – caused significant damage in the Glen Rosa area, destroying about 15,000 trees and killing much of the wildlife.
Kate Sampson, senior ranger at Brodick Country Park for the National Trust for Scotland, said dry ground would have likely ignited when sun shone through a discarded glass bottle, focusing heat like a magnifying glass.
BBC Scotland News understands it is too early for the Scottish and Fire Rescue Service to determine the cause of the blaze.