This watercolour was previously thought to show Mount Snowdon. It has many technical similarities with a group of
large sketches Turner painted out of
doors on his tour of Wales in 1799. However, it is now thought to be based
on a pencil sketch in a sketchbook
used on his 1801 tour of Scotland.
Turner shows his fluent use of pure watercolour in the rays of sunlight breaking through the clouds. He could produce this effect by removing wet paint from the paper with long brush strokes.