Verdun WW1 Battlefield site, Verdun-sur-Meuse, France. March 2014
Seen here:
The covered and fortified with concrete French 'London Communication Trench' which allowed supplies and relieving troops as well as hospital evacuation from the heights of Belleville and Douaumont day and night whilst under bombardment from the German guns. The construction avoided most of the caves in from attack or bad weather in this trench system.
The Battle of Verdun lasted 9 months, 3 weeks and 6 days between 21 February and 20 december 1916. It was the longest and one of the most costly battles in human history; recent estimates increase the number of casualties to 976,000.
Caption information below from wikipedia:
The Battle of Verdun (Bataille de Verdun0, was fought from 21 February – 18 December 1916 during the First World War on the Western Front between the German and French armies, on hills north of Verdun-sur-Meuse in north-eastern France. The German Fifth Army attacked the defences of the Région Fortifiée de Verdun (RFV) and the Second Army on the right bank of the Meuse, intending rapidly to capture the Côtes de Meuse (Meuse Heights) from which Verdun could be overlooked and bombarded with observed artillery-fire. The German strategy intended to provoke the French into counter-attacks and counter-offensives to drive the Germans off the heights, which would be relatively easy to repel with massed artillery-fire from the large number of medium, heavy and super-heavy guns, supplied with large amounts of ammunition on excellent pre-war railways, which ran within 24 kilometres (15 mi) of the front-line.
The German strategy assumed that the French would attempt to hold onto the east bank of the Meuse, then commit the French strategic reserve to recapture it and suffer catastrophic losses from German artillery-fire, while the German infantry held positions easy to defend and suffered few losses. The German plan was based on the experience of the September – October 1915 b