R.E.'s mine and counter-mine Messines Ridge, 1917.

R.E.’s mine and counter-mine Messines Ridge which dominated Ypres blown up and stormed, June 7th’, 1917. Tunnelling and mining operations were used to attack enemy positions by tunnelling underneath them and then destroying them with explosive mines. Much of the tunnelling was done by special Royal Engineers units formed from Welsh and Durham miners. Stereoscopic photograph, R.E.s mine and counter-mine Messines Ridge which dominated Ypres, blown up and stormed, June 7th 1917, nd.From a collection of one hundred and one stereoscopic photographs in box one of two entitled ‘The Great War’ including the official series. With stereoscopic viewer. Stereographs consist of two identical photographs paired in such a way that when seen through a special viewing instrument, a stereoscope, they appear as a three-dimensional images. By 1899 the photographs were mounted on thick card that was given a slight curvature to increase the illusion of depth. Associated with World War One, Western Front (1914-1918).