Footage shows around 300 Covid rule-breakers attending a drink-fuelled party on a snowy hill in Newcastle.The video shows the illegal gathering grow in size throughout yesterday afternoon - with crowds visiting Cow Hill on the city's Town Moor to sledge in the snow earlier in the day.Revellers are seen chanting and playing music whilst gathered in close proximity, with one bystander describing the group's behaviour as 'becoming more stupid' as the evening wore on.