Today, a large water filled crater can be found just outside the Belgian town of Ypres. It is remembered as the "Pool of Peace" and remains as a memorial to the soldiers of WWI. Just prior to Third Ypres, The Battle of Messines began when Allied forces set off 19 mines, devastating the German forces nearby. The explosions were so loud, they could be heard as far away as Dublin. The crater that would become the "Pool of Peace" was created when a 91,000 lb ammonal explosion detonated on June 7, 1917.