Below is a series of photographs I shot in Colca Canyon. Scorching hot, dry and high in elevation - the environment is extraordinarily impressive and challenging. Equally striking to the geological forces that have cut the deep river bed downward while pushing 20,000 foot peaks above are the feats of humans that have brought fertility to the barren environment. Everywhere the legacy of the Inca is present. Human civilization could hardly persist here without their engineering -  their terraces make cultivation possible on steep slopes, their long canals channeled along mountain sides bring water to parched fields, their paths cut into cliffs make the farthest reaches of deep gorges accessible.