he heard the crack of stone , and the murmur of water far off in morgul vale ; and down away under the rock the bubbling misery of shelob , groping , lost in some blind passage ; and voices in the dungeons of the tower ; and the cries of the orcs as they came out of the tunnel ; and deafening , roaring in his ears , the crash of the feet and the rending clamour of the orcs before him .