Blitzröhre aus der Sahara
Länge: 38 mm
Gewicht: 2,1 g
Originalfoto – du erhältst das abgebildete Exemplar!
solange der Vorrat reicht
Bei den hohen, durch Blitzeinschlag verursachten Temperaturen von bis zu 30.000 °C, verschmilzt Sand zu röhrenartigen Gebilden.
Diese ca. 2 cm starken Röhren stecken senkrecht im Sand, wobei sie sich gegen Ende hin verzweigen.
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