Europe's largest or World's largest? I wish they'd make their minds up. I think David Field wrote a paper for them suggesting it was probably the world's largest. And they sometimes say it is - http://www.english-heritage.or[...]rvation-projects/silbury-hill/ - but not always it seems. This has been going on for about 7 years and Google is full of both claims. Which is it? Answers on a postcard to EH please.