Surveys and Explorations
The first rough survey was done in 1897, mapping out the first 26 chambers. In 1956 the South African Spelaeological Association was tasked to draw up an accurate mapping of the Cango Caves, and look for alternative entrances.
Their results indicated that the caves were 775m long in a single line, and that they never rise nor fell more than 16m. These were called Cango I. The nearest point to the surface in the caves is at the top of the shaft in the Devil's Kitchen, 52.6m from the floor.
In 1972 James Craig-Smith, Luther Terblanche and Dart Ruiters widened an obstructed passage to discover Cango II. It stretches 270m beyond the end of the Devil’s Kitchen. At the end of Cango II there is a shaft that descends 20m to a chamber filled with water. This water flowed in the direction of Cango I.
In August 1975, during a symposium on cave biology, an exploration team led by Florus Koper drained the chamber of most of its water and crawled through what was previously an underwater passage. This led to the discovery of more caves, called Cango III. Altogether these caves are about 1000m long. The biggest of the chambers, stretches about 300m.
Digby Ellis and Dave Land added 290m to Cango III when they discovered a crawlway in December 1977. A further 90m was added in June 1978. All these extensions were surveyed in August 1978 by Dave Land, Charles Maxwell, Brian Russell and Dave Crombie.
Read more about this topic: Cango Caves
Famous quotes containing the word surveys:
“The three main medieval points of view regarding universals are designated by historians as realism, conceptualism, and nominalism. Essentially these same three doctrines reappear in twentieth-century surveys of the philosophy of mathematics under the new names logicism, intuitionism, and formalism.”
—Willard Van Orman Quine (b. 1908)