ナショナルジオグラフィックのインスタグラム(natgeo) - 7月23日 07時09分

Photo by @shonephoto (Robbie Shone) // Ain Dhab is largely a river cave with some higher fossil galleries at the far end of the streamway. Extremely slow moving water made it more challenging for the scientists to carry out verlocity experiments. We're following the work of a group of researches from the Tunisian Geological Survey and European Research Institutions (UK, Germany, Austria and SISKA in Switzerland) who are looking at changes in rainfall patterns through time. Several of their field sites lie inside Djebel Serdj, which hosts some of the largest caves in Tunisia.

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