On 3 August 1849, at a special meeting of the Archaeological Institute, 
Silbury Hill (click for geospatial location) was opened and found empty of archaeological remains. On 25 September 1849, Silbury Hill was then sealed with an urn placed inside. Image: Photograph of Silbury Hill, Wiltshire, UK, by Greg O’Beirne. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
BRANCH is an open-access publication 