LSE4328376 The exploitation of guano (seabirds excrement, uses as fertilizer in agriculture), the cliffs of the Chincha islands (close to the Peruvian coast) are dug on stairs for intensive harvesting of raw material, which loads in wagons is directly loaded in boats from all countries, this intensive exploitation of 1840 led to the exhaustion of the natural deposits of the islands long before 1874. Engraving to illustrate Les iles Chincha, rect by L.Simonin, in 1860, published in ???e tour du monde, nouveau journal des voyages?????? edited by Edouard Charton, 1868, Paris. Selva Collection. by Unknown Artist, (19th century); Private Collection; (add.info.: The exploitation of guano (seabirds excrement, uses as fertilizer in agriculture), the cliffs of the Chincha islands (close to the Peruvian coast) are dug on stairs for intensive harvesting of raw material, which loads in wagons is directly loaded in boats from all countries, this intensive exploitation of 1840 led to the exhaustion of the natural deposits of the islands long before 1874. Engraving to illustrate Les iles Chincha, rect by L.Simonin, in 1860, published in ???e tour du monde, nouveau journal des voyages?????? edited by Edouard Charton, 1868, Paris. Selva Collection.); Photo by Leonard de Selva.