Not quite out yet but you can pre-order..... to quote from the description;
"Written by two experts with unrivalled information and knowledge of Silbury Hill, and combining scholarly research and readable narrative, this book sets out the archaeological story of Silbury: from an early recognition of its importance to antiquarian and archaeological investigations of the hill."
Sir David Attenborough (Foreword), Jim Leary (Author), David Field (Author)
http://www.amazon.co.uk/Story-Silbury-Hill-Jim-Leary/dp/1848020465