“What are those big steps coming down the side of the pit?”
“What are those big steps coming down the side of the pit?”
“Benches. They serve as ringroads for heavy equipment around the pit, but their major purpose is to minimize earthslides.”
“It doesn’t look like it worked very well back there.” David hooked a thumb over his shoulder. “Up here, either.” They were nearing another area where the look of vast stairs descending into the earth was obliterated by a tilted range of crumbled rock.
“That’s a slope failure.” The Viet Cong Lookout swooped above the slide area. Beyond it, David saw networks of black stuff that at first looked like cobwebs. As they drew nearer, he saw that the strands of what looked like cobwebbing were actually PVC pipe.
