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A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot magma, volcanic ash and gases to escape from below the surface. Volcanoes are generally found where tectonic plates are diverging or converging. A mid-oceanic ridge, for example the Mid-Atlantic Ridge, has examples of volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by convergent tectonic plates coming together...

Burning Man is an annual event held in the Black Rock Desert in northern Nevada, in the United States. The event starts on the Monday before and ends on the day of the American Labor Day holiday. It takes its name from the ritual burning of a large wooden effigy on Saturday evening. The event is described by many participants as an experiment in community, radical self-expression, and radical self-reliance. Burning Man is organized by Black Rock City, LLC...

The Null Stern Hotel is a former nuclear bunker converted into a hotel. A prototype opened in Teufen, Appenzellerland, Switzerland on June 5, 2009 and was transformed into a museum in June 2010. Future hotels are under planning in urban locations. Concept Null stern in German means zero star. This does not refer to the classification, but is part of the hotel brand name Null Stern - the only star is you...

A tidal bore (or simply bore in context, or also aegir, eagre, or eygre) is a tidal phenomenon in which the leading edge of the incoming tide forms a wave (or waves) of water that travel up a river or narrow bay against the direction of the river or bay's current. As such, it is a true tidal wave and not to be confused with a tsunami, which is a large ocean wave traveling primarily on the open ocean...