This property of both nitro and nitrate groups is because their thermal decomposition yields molecular nitrogen N 2 gas plus considerable energy, due to the high strength of the bond in molecular nitrogen.
Mount Ararat (16,940 feet, 5165 m) is the largest volcano in Turkey. Although not currently active, its most recent eruption has probably been within the last 10,000 years.
At 10,925 feet (3,330 meters), Mount Etna is Europe's tallest active volcano and has been erupting almost continuously for about half a million years. Its height keeps changing as volcanic material collects during eruptions and crater walls collapse subsequently.