The undulating granite hilltop of Daqingshan in Hexigten Banner, Inner Mongolia, contains hundreds of circular, oval, and irregularly shaped caves with large openings and great depths that are shaped like a mortar, a cylinder, a bowl or a dish. Unlike the potholes carved by flowing water along rivers in southern China, there is no indication of water flowing into the cave. They have two main formation mechanisms: congelifraction or wind erosion, but both may occur (Fig. 28).
Granite mortars in Hexigten Global Geopark, Inner Mongolia
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(2020). Granite Mortar. In: Chen, A., Ng, Y., Zhang, E., Tian, M. (eds) Dictionary of Geotourism. Springer, Singapore. https://doi.org/10.1007/978-981-13-2538-0_959
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DOI: https://doi.org/10.1007/978-981-13-2538-0_959
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