ww1 artillery shell craters on the vimy ridge battlefield, givenchy-en-gohelle, lens, pas-de-calais, hauts-de-france

meadow grass tree hill grassland pasture field prairie wilderness plant mountain green landscape plateau vegetation forest plain nature canada canadian national vimy ridge memorial givenchy-en-gohelle givenchy gohelle lens calais hauts-de-france france hauts duncan brown craters shell munition ammunition crater battlefield war ww1 wwi grieve fallen dead soldiers allied allies loss lost walter allward danger unexploded shells wood trees munitions government history trench trenches sign warning artillery pas-de-calais