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The valley of the Leiho in South Hunan has long been famous for itsnumerous coal-fields.It was Ferdinand von Richthofen~1 who first studiedthe geology of the region and discovered the well-known Gigantopterisflora in the coal measures,which was named by him the Lui-Pa-Kou
The valley of the Leiho in South Hunan has long been famous for itsnumerous coal-fields. It was Ferdinand von Richthofen ~ 1 who first studied the geology of the region and discovered the well-known Gigantopterisflora in the coal measures, which was named by him the Lui-Pa-Kou