The Sausage Balloon

sausage balloon," much used by the French for observation purposes, is shown here in an immense mine crater, about to rise with observers. There are many such craters in the territory where the British blew nine miles of German trenches into the air. This crater is one of the most im- mense on the whole battle-front and it probably took tons and tons of ex- plosives to blow it up. It now serves as an excellent hiding-place for the balloon.