These Strange ‘Earth Pyramids’ Have Giant Rocks Balanced Atop Them
Land deep in a forest on the border of Italy and Austria, and you’ll discover an otherworldly range of clay structures that look like an army of pyramids, topped by little hats.
Also likened to organ pipes, the strange conical structures are almost 200 years old and the natural result of a huge storm that raged in the Val Pusteria valley, above the village of Perca in South Tyrol.
According to local accounts, the Rio Terento swept away many buildings and washed away rocks and stones covering hillsides, triggering the formation of the “Earth Pyramids.” Growing out of underlying mud and stones, the raw material of which the jutting columns are made is moraine clay, dating from the late ice age.
In Perca, where moraine deposits lie on the steep hillside protected from wind, conditions are favorable for the bizarre monuments to develop.
At points where the moraine contains large stones, the stone will provide a covering to keep the clay beneath dry and hard. As the clay is eroded by rain, over time a spire is created; hence the sight of small boulders balanced atop them.
They do not last forever, since when a stone covering a column falls, the pyramid will gradually begin to thin out and shrink, eventually disappearing altogether. New ones then begin to grow on the hillside higher up, and the whole process starts anew.
The Earth Pyramids of Platten, as they are known, are not the only ones to exist—there are others much, much older.
Identical geographical curiosities can be found an hour’s drive away on the Ritten Plateau, close to Bolzano, known as Renon in Italian.
The tallest in Europe, these majestic pillars started appearing when the glaciers of the Valle d’Isarco melted, exposing the valley. During periods of rainfall, the slopes continued to erode, and just as in the Val Pusteria, where there are large stones in the mud, pillars start to rise from the ground.
The biggest and most spectacular earth pyramids might have taken thousands of years to reach full maturity, only to vanish when the boulder finally topples, leaving the clay exposed to the elements.
Check out more photos below:
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