Description
This is a karmic surgence located at the entrance of a circular cavity of several meters in diameter. This is associated with the aquifer of higher Cretaceous dolomies and limestone. It is located in the vicinity of the inverse failure contact between the carbonates of the Upper Cretaceous and the waterproof margas of the Middle Myocene. It is a cavity that could in origin correspond to a small dolin, developed on subhorizontal layers.
The birth of the Segura River is a penetrable siphon, with an explored length of 354 meters and a 17 meters gap. The exploration of this cavity was carried out by spelebuchers of the Madrid Standard Group during the 1979 and 1980 years, carrying out an important work of disobstruction within the siphon. (G.E. STANDARD, 1980) The emergence is located at the bottom of a blind valley in the foothills of the Sierra de Segura near the population of Pontones. It is a flooded gallery where three air bubbles are located at about 100, 160 and 255 m from the mouth.
Source: Inventory of Georresources of Andalusia. Environmental Council. Junta de Andalusia.
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