Columns of flames have been seen during the eruptions of some volcanoes, sometimes reaching 500 meters in height, such as during the eruption of Mount Marapi in Sumatra in 1932.
Nikolai Gogol | Nikolai Rimsky-Korsakov | Nikolai Yudenich | Nikolai Bulganin | Nikolai Timkov | Nikolai Leskov | Nikolai Rubinstein | Nikolai Bukharin | Nikolai Volkoff | Nikolai Fraiture | Nikolai Rakov | Nikolai Pozdneev | Nikolai Eilertsen | Nikolai Berdyaev | Nikolai Ryzhkov | Nikolai Krylenko | Nikolai Glushkov | Nikolai Erdman | Henrik Nikolai Krøyer | Russian battleship Imperator Nikolai I | Nikolai Vavilov | Nikolai Sokoloff | Nikolai Semenovich Kurnakov | Nikolai Roslavets | Nikolai Ostrovsky | Nikolai Myaskovsky | Nikolai Medtner | Nikolai Kibalchich | Nikolai Kamov | Nikolai Ivanovich Kuznetsov |