SOUTERRAINS
and the sea, betwixt the courses of the Somme and Authie, that was not provided with these underground refuges. The character of all is very much the same. They consist of passages communicating with square or circular chambers that served as stores. They have been described at length by M. Bouthers in Mémoires de la Société d' Archéologie du département de la Somme, Amiens, 1834, t. i.
To what date, or period rather, do they belong?
Some doubtless are of extreme antiquity, but the majority are comparatively modern. It is a significant fact that the entrance to perhaps the majority is in the sacristy of the parish church, and in that at Gapennes care was taken not to undermine the tower of the church. M. de Carpentin, who explored and reported on the excavation at Gapennes, remarks on the care taken to so distribute the chalk brought up from these passages and vaults that no heaps were anywhere visible.
"The motive that can have induced the undertaking of such an extensive work can only have been that necessity drove the inhabitants to create for themselves a refuge in time of war." In it he found two pieces of common pottery, a lock and a hinge of iron, some straw and leather soles of women's shoes. He adds: "At the entrance of several of the chambers the stone is worked to receive doors, and here portions of decayed wood were found. And many of the chambers had their walls blackened by smoke as of lamps."
At Naours in Somme, the underground galleries have been explored thoroughly; there are several circular chambers for stores, and corn has been found in them, also fourteen gold coins of Charles VI or Louis XIV. In all there are 201 galleries and 300 chambers and the labyrinth extends to the distance of 6000 feet. At Santerre, which possesses three of these refuges, that portion of its territory was called Territorium Sanctæ Libertatis.
The north-east of France, Picardy and Artois, were
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