South China Morning Post

Geologist explains mystery of pyramid mountains

- Zhang Tong richard.zhang@scmp.com

Amid the lush landscape of Guizhou province, a drone films a natural wonder: mountains with a striking resemblanc­e to the ancient pyramids of Egypt.

The footage has captivated social media users worldwide, and its virality has sparked online debate.

Some speculate that the mountains in Anlong county conceal the tombs of ancient emperors while others believe they were crafted by the same extraterre­strial beings purported to have built the pyramids of Egypt.

Dispelling these myths, Professor Zhou Qiuwen, a geologist from Guizhou Normal University, provided a scientific explanatio­n in a report this week by Eyesnews, a news agency under the auspices of the Guizhou Daily.

According to Zhou, these natural “pyramids” are not artificial­ly constructe­d nor are they an ancient tomb site. Instead, they are testament to nature’s craftsmans­hip.

Guizhouis known for its rich natural beauty and diverse landscape. The average elevation of the province is around 1,100 metres, with 92.5 per cent of its area consisting of mountains and hills.

The region is home to numerous mountain ranges, with peaks rising steeply and valleys deeply etched, stretching far and wide across the landscape.

The view in the video is characteri­sed by karst topography, a landscape formed from the dissolutio­n of soluble carbonate rocks. The cone-shaped mountains are the result of rock formations dissolving.

Zhou explained the process in the report: “The vertical erosion by water has led to the original expansive rock masses being segmented into independen­t units. As this erosive process continues, the rocks at the top undergo significan­t dissolutio­n, while those at the base are relatively less affected, resulting in sharp peaks atop wider bases”.

Similarly, the layered appearance of these formations is linked to the rocks’ genesis.

“The mountains in Guizhou are made of dolomite rocks that are over 200 million years old, from a time when the area was mostly under water. These rocks formed in the sea, as minerals dissolved in the water and crystallis­ed into solid rock,” he said.

“Due to periodic changes in climate, geological structures and other environmen­tal factors, the rock formation process was repeatedly interrupte­d and restarted. This created rocks with clear layers,” he added.

The video highlights features on the mountain surfaces that look like stacked bricks, that Zhou said were also the result of natural erosion. “Some rock surfaces initially had fine cracks; water erosion among these cracks was not strong enough to dissolve the entire rock mass but sufficient to cause segmentati­on, thereby creating a block-like appearance.”

 ?? Photo: Weibo ?? The sharp-edged mountains in southwest China that resemble the pyramids of Egypt.
Photo: Weibo The sharp-edged mountains in southwest China that resemble the pyramids of Egypt.

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