thephotosocietyのインスタグラム(thephotosociety) - 8月19日 03時01分

Photo by Robbie Shone @shonephoto A geologist studying caves enters a small chamber in Lechuguilla (Carlsbad Caverns) containing stunning, cloud-like formations known as mammillaries. These formed underwater, when its lake level was much higher than it is today.

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