Ключевые слова: acidic, activity, color, colored, cone, crystallization, crystals, deposit, emits, field, fumarole, fume, gas, geology, geyser, hollow, hot, hydrothermal, island, kunashir, kuril, kurile, landscape, mendeleev, mineral, native, natural, nature, poisonous, slope, smoke, smoking, solfatara, steam, sulfide, sulfur, sulfurous, tephra, toxic, vapor, volcanic, volcano, yellow,