Standing like some of neolithic monument with the backdrop of an autumn sunset, this concrete British Observation Post bunker is one of two located on the road between the villages of Auchonvillers and Mesnil on the Somme. They were built before the Battle of the Somme to allow Staff Officers a clear view towards the front lines at Beaumont-Hamel and Thiepval and were in use when the battle started on 1st July 1916.