human
When we decided to use dynamite in our excavations, a long fuse was laid from the tunnel's entrance to the unyielding wall at the other end. There this fuse was connected with a dynamite charge placed in the crevice of the rock to be destroyed. Raoul, waiting to set off the fuse, remained at the opening of the tunnel. I was at the further end, looking after the laying of the dynamite. As I started for the entrance, I was a little behind the others. The latter no sooner gained the outer air than a muffled roar shook the tunnel. The ground swayed, the terrific concussion of air seemed to rend my very brain, and I fell unconscious.