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	The Frasassi caves are underground caves that are located within the Regional Natural Park of Gola della Rossa and Frasassi in Genga in Ancona Province.</div>
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	The complex is formed by a series of caves of which the first visited by the current input is the chasm of Ancona: has an extension of 180 x 120 m and a height of 200 m; It is so large (over 2 million m3) than inside it could be smoothly Milan Cathedral.</div>
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	The discovery of the caves Frasassi dates back to September 25, 1971 by the CAI Speleological Group of Ancona led by Giancarlo Cappanera. Follows other during the years 1950 and 1960 by groups of the CAI (Italian Alpine Club) of Jesi and Fabriano including in 1966 a long fork over 1 km that starts from the Cave of the River.</div>
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	In July 1971 a group of 7 Jesi explorers is attracted by a strong current of air escaping from a small opening. After expanding the size of the passage (later called &quot;Strettoia del Tarlo&quot;) to make it viable, the explorers you forward in a dense network of galleries, tunnels, shafts and caves for a distance of about 5 km.</div>
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	The first track of the most important discovery, that of the Great Cave of the Wind, you will have in June 1971 when Rolando Silvestri Urbania (PU), 10 May 1953] and Santo Umberto Camposampiero (PD), 26 July 1953], climbing the slope north of Mount Valmontagnana, discovered a narrow entrance. September 25, 1971 Rolando Silvestri, during the expedition of the &quot;CAI Speleological Group Marches of Ancona&quot;, led by Giancarlo Cappanera, found that opening in the mountain from which came the air jet which flung open the front door of the cave which it was immediately christened the Great Cave of the Wind.</div>
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	Initially, the discoverers were in this large cave in the dark and then existing equipment did not allow them to come down to the base of the cavity below, and it was estimated the height of the cave by throwing a stone and measuring the time of fall. A first rough calculation led to the unexpected height of over 100 m. Later explorers began to draw up appropriate equipment and they explored the immense space that was called &quot;Ancona Abyss&quot; in honor of the city of the discoverers. The news of the discovery was spread by the press and it is from this moment that begins awareness to the general public of Frasassi.</div>
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	The December 8, 1971 was discovered a link between the Cave of the River and the Great Cave of the Wind, which was renamed &quot;Conduct of Fabriano&quot;.</div>
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	The discoveries followed one another over the years and a number of other more or less accessible areas were discovered and explored by speleologists. At the moment the complex of the Frasassi caves has a length of over 13 km. In addition to the Abyss Ancona, they are known the &quot;Room 200&quot;, so called because it is a corridor of 200 meters, the &quot;Hall of Candles&quot; for the numerous small cylindrical stalagmites surrounded by a ring of rock as the candles on a saucer the &quot;White room&quot;, whose color is due to several layers of pure calcite, the &quot;Hall of the Great Bear&quot; for the boulder due to erosion thousands of years water has accidentally taken the vague shape of a bear and &quot; infinity room &quot;, so called because it has a circular shape and irregularly during the early exploration cavers lost their way and found themselves to turn around the room several times before finding an exit, as if they were in an endless path.</div>
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	Inside the Frasassi caves there is a constant temperature of 14 &deg; C and a relative humidity close to 100%. Given the continuous passage of visitors, the temperature and &#39;kept constant thanks to a refrigeration system that passe in the railings which run along the tourist path.</div>
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	Inside you can admire the karst cavities of natural sculptures formed by layers of limestone over 190 million years thanks to the work of water and rock. The water flows over limestone dissolves small amounts of limestone and falling to the ground, during a dripping that lasts thousands of years, the deposit and form of concretions of considerable size and shapes sometimes curious. These are divided into stalagmites (Columns that grow progressing from bottom to top) and stalactites (hanging from the ceiling of the cavity).</div>
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	The shapes and dimensions of these natural works have stimulated the imagination of the cavers, who after having discovered they &quot;baptized&quot; calling them in a curious way, among the stalactites and stalagmites the most famous remember: the &quot;Giants&quot;, the &quot;Camel&quot; and the &quot;Dromedary&quot;, l &#39; &quot;Orsa&quot;, the &quot;Madonnina&quot;, the &quot;Sword of Damocles&quot; (big stalactite 7.40 m in height and 150 cm in diameter), &quot;Niagara Falls&quot;, the &quot;Slice bacon &quot;(light pink) and the&quot; Slice of bacon &quot;(white), l &#39;&quot; Obelisk &quot;(stalagmite 15 meters high at the center of the room 200), the&quot; Organ Pipes &quot;(conical-laminated concretions that have the name to the fact that if you are hit resonate), the &quot;Castle of the Witches.&quot;</div>
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	Inside the caves are also ponds where stagnant water and the dripping of the &quot;wells&quot; deep cylindrical cavities up to 25 m that can collect water or spray it at karst plains below.</div>
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	In caves it does not penetrate the surface at any point natural light, so the lighting is completely artificial and uses only cold white lights, that is, that does not produce heat. The only lights were not of this type are those blue used to bring out the wells and ponds.</div>
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	Source: Wikipedia</div>
