Mountains Mountains ==Extremes on Land== ...more on Wikipedia about "Extremes on Earth"
In mountaineering, a fourteener is a mountain that exceeds 14,000 feet (4,267.2 m) above mean sea level. ...more on Wikipedia about "Fourteener"
This is a gallery of images of mountains and mountain ranges. ...more on Wikipedia about "Gallery of mountains"
A hill is a landform. Many hills are higher than 600 metres, but most are generally small. ...more on Wikipedia about "Hill"
Mountains can be characterized in several ways. Some mountains are volcanoes and can be characterized by the type of lava and eruptive history. Other mountains are shaped by glacial processes and can be characterized by their shape. Finally, many mountains can be characterized by the type of rock they are composed of. ...more on Wikipedia about "List of mountain types"
In geology, a massif is a section of the Earth's crust that is demarcated by faults or flexures. In the movement of the crust, a massif tends to retain its internal structure while being displaced as a whole. The term is also used to refer to a group of mountains formed by such a structure. The massif is a smaller structural unit of the crust than a plate. ...more on Wikipedia about "Massif"
A mountain is a landform that extends above the surrounding terrain in a limited area. A mountain is generally higher and steeper than a hill, but there is considerable overlap, and usage often depends on local custom. Some authorities define a mountain as a peak with a topographic prominence over a defined value: for example, the Encyclopædia Britannica requires a prominence of 2,000 feet (610 m). ...more on Wikipedia about "Mountain"
The most general definition of a mountain range is a group of mountains bordered by lowlands. Mountain ranges are usually separated from other mountain ranges by passes and rivers. In the general definition, a mountain range does not necessarily have the same geology. ...more on Wikipedia about "Mountain range"
Mountain rescue refers to search and rescue activities that occur in a mountainous environment, although the term is sometimes also used to apply to search and rescue in other wilderness environments. The difficult and remote nature of the terrain in which mountain rescue often occurs has resulted in the development of a number of specific pieces of equipment and techniques. Helicopters are often used to quickly extract casualties, search dogs may be used to locate them. ...more on Wikipedia about "Mountain rescue"
A peak is a mountaintop that has been modified by the action of ice during glaciation and frost weathering. Ice fields develop bowl shaped basins in the sides of a mountain called cirques. These encroach on each other to produce ridges known as arêtes. The meeting of three or more arêtes forms a peak. ...more on Wikipedia about "Peak"
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