mb says...[QUOTE] [QUOTE="Lozzo"] [1] Nutholes are large lake type things around here. They are where the brickworks have dug out the clay for brick production and then filled them in with water.[/QUOTE][/QUOTE] [QUOTE] We called them knotholes in Peterborough, 'cos that's where they got the clay knots from... A lot of them were filled with flyash from the kilns and now they're building houses on them FFS![/QUOTE] Landfill sites is what we have now. Only some of them are water filled now, the rest are turning into a mini mountain range as millions of tons of London's shite is deposited in them.