A sinister white mass appears out of nowhere on a picturesque tree-lined river… and gets bigger and bigger until it has formed a wall across the water.It could be something out of a horror film but, instead, this was the scene that greeted walkers beside the Lea in north-east London at the weekend.Piles of foam up to 10ft high poured over the weir at Lea Bridge Road, near Hackney Marsh.

read more Foam monster engulfs River Lea in Hackney, east London, reaching heights of 10ft | Metro News.