Sant Joan les Fonts Boscarró

Boscarró

The third lava flow was in the Molí Fondo - Boscarró section about 130,000 years ago from the volcano Garrinada of Olot. You can observe different retraction habits (cooling of the lava). One of the most obvious is the set of columns with hexagonal and / or pentagonal shapes of 20 to 40 cm in diameter and 2 to 3 meters in height. A second very clear habit is the one that presents a form of slabs. The difference between the two depends on whether the lava was moving or not at the time of cooling.

  
 

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