eco-rainforest in Lancashire

"It includes one of England's highest waterfalls, walkways through the treetops and possibly Europe's biggest compost heap, capable of using most of the green waste of a city the size of Manchester."

And even better
"Grimshaw said the design was applicable to landfill sites around Britain."
Guardian Unlimited | Special reports | Eden Project team plans eco-rainforest in Lancashire: environment, ecology, UK, green, energy, footprint, compost,