Onega River, Volcanic caldera in Catamarca Province, Argentina
Cerro Blanco is a volcano in Catamarca Province with four nested calderas and stands at around 4,670 meters elevation. Its structure shows lava flows, domes, and volcanic deposits from different eruption phases.
Around 2300 BCE, the volcano experienced one of the largest eruptions in the Central Andes. This event left extensive layers of volcanic material spread across the region.
Local communities view the mountain as a sacred place where they leave offerings, reflecting how volcanic peaks hold spiritual meaning in their worldview. This practice connects everyday life to beliefs about nature's power.
The location is accessible via trails through volcanic terrain, but visitors should be prepared for thin air at this altitude. Temperature shifts sharply between sun and shade, so proper gear is essential.
The volcano displays Earth's largest wind-formed ripple marks, reaching up to 2.3 meters in height across wavelengths of about 43 meters. These natural formations result from powerful winds shaping volcanic rock over extended periods.
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