The peace and tranquility of the Peak District was shattered by the roar of scores of motorbikers, writes Bob Westerdale.
Derbyshire has long been a magnet for bikers - but this display of numbers, captured here on video, was astonishing.
VIDEO: Press the play button to watch our video of the ride past.
Some onlookers put the number of one group, seen on this video near Surprise View, Hathersage, as around 150.
But who were they?
Let us know if you recognise the army of two-wheelers, filmed here on Saturday, June 15, 2013. Leave a comment below or email email@example.com.