ナショナルジオグラフィックのインスタグラム(natgeo) - 9月25日 21時40分

Photo by @shonephoto (Robbie Shone) - We're following the work of a group of scientists from the Tunisian Geological Survey and European Research Institutions (UK, Germany, Austria) who are looking at changes in rainfall patterns through time. One of their field sites is on Djebel Serj, which hosts some of the largest caves in Tunisia.
Pictured here is the inside of 'Grande Salle' in Grotte de la Mine. Discovered accidentally by mining activities last century, the chamber contains many beautiful cave formations and is home to a large colony of bats.

[BIHAKUEN]UVシールド(UVShield)

>> 飲む日焼け止め！「UVシールド」を購入する