This is a view overlooking the Inca site of Moray, near Maras, Peru.  The site comprises three groups of concetric terraces making sort of upside-down cones in the ground.  The oft-repeated theory about these things is that they were "laboratories" used by the Inca to test the growing conditions at different depths and the subtly different micro-climates at each level.  I don't think I buy that explanation. . .