Hmm ok I will ask. The tunnels were used for what purpose, Luc ? > Searching in a guide book on the north of France , I > found out that the sandstone tunnels at the Vimy > battlefield were used by Huguenots hiding in 16th and > 17th centuries. Luc

Sandstone was used for construction in northern France , the british and canadian miltary engineers decided to continue those tunnels under German lines . Luc ----- Original Message -----