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(picture of Luigi Ottani)
The Salse of Nirano, an important geological phenomenon of international relevance, represent a successfull example of environmental and touristic valorization.
The Salse (mud volcanoes) are the product of mainly gasous (methan) and partly liquid (oil) hydrocarbons deposits. As they ascend to soil surface, they wash out clay materials: the ejected mud is then responsible for the Salse's typical cone shape.
Inside the cones, mud seems to boil because of hydrocarbons bubbles, which are actually emitted at ambient temperature. The name Salse indicates that the ejected mud contains a certain amount of salt.
The field of Nirano ist surely the most important in Italy. The Salse of Nirano have a very special aura: they have been known since ancient times, and have been the subject of different interesting researches carried out by historians and scientists.