Existing comment:
Stop 4: Spoils Pile:
Below you is a spoils pile. When debris from construction of rock cuts wasn't needed, the rock was dumped into mounds called spoils piles. Most of these piles were size-graded. That is, each spoils pile featured a different size of rock. Notice too, the top of this spoils pile is perfectly flat. In this case, flattening of the top surface may have been done to create a work area along the grade. |