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#geology

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"The most outstanding rock formation on this island can be found along the western coast and is shaped like an elephant head, with its curious appearance resembling a pachyderm with the trunk being positioned under the Atlantic Ocean.

Known as Elephant Rock, it was formed by one of the many volcanic eruptions in Heimay's history."

atlasobscura.com/places/elepha

Atlas Obscura · Halldórsskora (Elephant Rock)On an island south of Iceland, a large volcanic rock formation resembles an elephant.

#Thundereggs usually look like ordinary rocks on the outside, but slicing them in half and polishing them may reveal intricate patterns and colors.
A #thunderegg is a spherical or ovoid nodule-like rock, similar to a filled geode, formed within rhyolitic volcanic ash layers as a concretion of silica
geologyin.com/2020/05/thundere
By #GeologyWonders
#Geology #GeologyPage #Nature #Minerals #Crystals #Gems #Nature #NatureLovers #NaturePhotography #Photographer #RockPorn

Alcantara Gorge 5, Francavilla di Sicilia, Sicily, Italy

Several thousand years ago, the river bed was blocked by a lava flow from Mount Etna. As the lava was cooled much more quickly by the water than it would have done otherwise, it crystallised in the form of columns. Over the next millennia, the river naturally eroded a channel through these columns, resulting in impressive gorges and ravines, such as the Alcantara Gorges (Gole dell'Alcantara) next to Francavilla di Sicilia, where the Peloritani mountains end. – Wikipedia



#Alcantara #gorge #river #nature #outdoors #river #geology #volcano #volcanic #sicily #italy #photography #travel