Given the question: Information: - Antarctica (US English , UK English or ) is Earth's southernmost continent. It contains the geographic South Pole and is situated in the Antarctic region of the Southern Hemisphere, almost entirely south of the Antarctic Circle, and is surrounded by the Southern Ocean. At , it is the fifth-largest continent. For comparison, Antarctica is nearly twice the size of Australia. About 98% of Antarctica is covered by ice that averages in thickness, which extends to all but the northernmost reaches of the Antarctic Peninsula. - Side Crater ( 77 32 S 167 9 E ) is a nearly circular crater ( c.3700 m ) situated at the summit of Mount Erebus on the southwest crater rim . Named for its location on the side of the main summit cone of Mount Erebus . This article incorporates public domain material from the United States Geological Survey document '' Side Crater '' ( content from the Geographic Names Information System ) . - Mount Erebus is the second-highest volcano in Antarctica (after Mount Sidley) and the southernmost active volcano on Earth. It is the sixth highest ultra mountain on an island. With a summit elevation of , it is located on Ross Island, which is also home to three inactive volcanoes, Mount Terror, Mount Bird, and Mount Terra Nova. - Mount Sidley is the highest dormant volcano in Antarctica, a member of the Volcanic Seven Summits, with a summit elevation of . It is a massive, mainly snow-covered shield volcano which is the highest and most imposing of the five volcanic mountains that comprise the Executive Committee Range of Marie Byrd Land. The feature is marked by a spectacular 5km wide caldera on the southern side and stands NE of Mount Waesche in the southern part of the range. - Mount Bird is a high shield volcano standing about south of Cape Bird, the northern extremity of Ross Island. It was mapped by the British National Antarctic Expedition, 190104, under Robert Falcon Scott, and apparently named by them after Cape Bird. Shell Glacier and Endeavour Piedmont Glacier lie on its slopes. - A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. - Ross Island is an island formed by four volcanoes in the Ross Sea near the continent of Antarctica, off the coast of Victoria Land in McMurdo Sound. - In Greek mythology, Erebus , also Erebos ("deep darkness, shadow"), was often conceived as a primordial deity, representing the personification of darkness; for instance, Hesiod's "Theogony" identifies him as one of the first five beings in existence, born of Chaos. Erebus features little in Greek mythological tradition and literature, but is said to have fathered several other deities with Nyx; depending on the source of the mythology, this union includes Aether, Hemera, the Hesperides, Hypnos, the Moirai, Geras, Styx, Charon, and Thanatos. What is the relationship between 'side crater' and 'mountain'?
The answer is:
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