Ключевые слова: abstract, acid, america, andean, andes, background, brown, calcium, danger, dangerous, exploration, flow, fluid, fountain, fresh, fumes, gas, heat, ijen, indonesia, landscape, mountain, natural, nature, orange, peru, poisonous, rainbow, raw, river, stream, sulfur, sulfuric, travel, volcanic, volcano, wallpaper, white, work, yellow,