The Bentley Valley in Antarctica is a very interesting geographic object. It is the deepest depression on the earth that is not filled with the liquid water. Its depth is 2 540 meters below sea level, the valley is filled with the ice. This unique lowland was named in honor of the discoverer - Charles Bentley, who made the grand discovery during an expedition in 1961.
Although there is no way to walk on the bottom of the valley, the valley attracts the numerous explorers and, more recently, the curious tourists who visit them during the expeditions. The reason for the great popularity is the abnormal activity fixed near the valley. The easiest way to check this activity - look at the magnet needle. Next to the sink, the compass needle looks 'the right place' very long and often can not find it.
The causes of geomagnetic anomalies are one of the main antarctica. The fact that they are directly connected with the deepest depression located in this terrain is, however, undoubtedly. Although the Bentley sink can not be officially attributed to the 'dry' sinks and can not occur on its ground, it is in reality the deepest sink in the world whose reason is not water-covered. Next - Laguna del Carbon
Afar Depression, Djibouti
Laguna del Carbon, Argentina