Скачать или смотреть Granite, Geopolymer, and Lost Technology | Sulawesi’s Stone Jars

Journey into the heart of Central Sulawesi, Indonesia, to explore the mysterious ancient stone jars scattered across the Bada Valley. These massive megalithic jars, some believed to be over a thousand years old, were likely used in ceremonial burials or to honor the deceased. In this video, you'll see various stone jars up close, each with unique characteristics yet sharing a consistent cylindrical or conical shape.

One theory suggests that these jars might have been made using an ancient technology called the geopolymer process, a method of creating synthetic stone from natural materials rather than carving it from solid rock. This could explain the jars' uniformity and the lack of nearby quarry sites. Interestingly, many jars are made of volcanic stone or other local minerals, but some are carved from granite, a particularly hard and durable stone. The use of granite raises further questions: Did ancient artisans have the tools and expertise to work with such a challenging material, or could they have used alternative techniques like geopolymer casting?

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