Frost last night and thick mist this morning. Quiet night. Bosche blow up a mine somewhere N. of us at 5.45 a.m., which shook everything. Monday is Barossa Day so shall have a whole holiday. Parade in a.m. for Gen. Griffith to present Bugle; football match in afternoon. Cannot manage concert, no room available.
The mine blown by the Germans was at Spanbroekmolen, south east of Wijtschate. In 1916 a British gallery had been dug under the German position there and the mine blown by the Germans was an attempt to disrupt British mining activity. It successfully destroyed the main gallery and cut the initiation cable leading to the explosives under the German position. A new tunnel was dug to bypass the damaged area and to reconnect the cable. The British mine was exploded successfully in the opening moments of the Battle of Messines in June 1917.