For the more than 1,500 mountains worldwide with a prominence of over 1,500 meters (4,921 ft), the term "Ultra Prominent Peak" has become established. The volcano is less than one million years old. Most eruptions are small and Strombolian in character, tossing bombs onto the crater rim. It has been continuously active since 1972. Erebus is an active volcano with a convecting lava lake within a summit crater. In the Himalayas, up to 500 meters is used as a criterion. Mount Erebus (elevation: 12,444 feet, 3,794 m) is on Ross Island in the Ross Sea. In the European Alps, for example, a prominence of 30 meters is considered to be the standard for the independence of a mountain. Here again, there are no uniform absolute values. For the demarcation of two connected geoformations, the topographic prominence (shoulder drop) and dominance (distance between each other) are also used. Also, a mountain has an independence, so a large hill on a mountain plateau does not become a mountain itself. Mountains are usually steeper and higher. What is a mountain? There is no exact distinction between a mountain and a hill. It is the horizontal distance between two peaks. Generalized map of Mount Erebus showing the locations of sites mentioned in the text, including the upper, middle, and lower Barne Glacier tephra sites and. The "dominance" is also recorded in the classification of mountains. The 372-ton ship was armed with two mortars one 13 in (330 mm) and one 10 in (254 mm) and 10 guns. The drop is the deepest cut between the peaks. HMS Erebus was a Hecla-class bomb vessel constructed by the Royal Navy in Pembroke dockyard, Wales, in 1826.The vessel was the second in the Royal Navy named after Erebus, the personification of darkness in Greek mythology. To the south, the Erebus ice tongue stretches out into McMurdo Sound. This is the relative height to the actual base of the mountain, which can also be a foothill of a plateau. The Mount Erebus stratovolcano rises 3794 meters (12,447 feet) above sea level. Therefore, in addition to the absolute height, the topographic "prominence" is also measured, often called the autonomous height or shoulder drop. Prominence: Relative height to surroundings A small hill on top of a large mountain would have an extremely high peak just because of its surroundings - at least if you measure it in relation to sea level.
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