Small rocks and dirt cascaded on her prone form a few seconds later.

The concussion from each blast-in particular the 200cm bolts-threatens to bring more roof material down on top of me, but I shoulder ahead, rock and debris cascading across my upper works in a steady avalanche that fills the tunnel with clouds of swirling dust.

Building was most sure when the liquid rock did not explode into minute ashy fragments, but cascaded viscously down the sides of the mountains, for this bound together what had gone before, and established a base for what was to come.

The concussion of the blast had burst the towering cliffs; rock had cascaded into the valley for days.

Dirt and rock cascaded through the turret hatch, and we yelled to one another, asking if anyone was hurt.