This happened today apparently, what a world we live in:
https://metro.co.uk/2018/06/13/bunch-idiots-destroy-320000000-years-history...
I think this happened "around 8.45pm on Friday, 1 June" there has already been a post about this IIRC.
Oh yep, even says in the article:
"A North Yorkshire Police statement said: ‘At around 8.45pm on Friday, 1 June a group of five young people were seen pushing a rock at the top of one of the crags."
Duh
