Ключевые слова: active, alight, boys, casting, climax, crater, craters, dense, descent, effusive, eruption, etna, excursion, explosion, fire, fun, geology, go up, heat, history, holiday, holidaymakers, land, landscape, lava, magma, movement, naturalhistory, petrified, pumice, river, rock, schoolchildren, slopes, smoke, solid, solidified, solidify, stone, tourist, tourists, transfix, trip, turned, view, volcanic, volcano, young,