National Geographic Travelのインスタグラム(natgeotravel) - 2月25日 00時15分

Walking through Mammoth Cave, which now has well-built paths and good lighting, it is hard not to think back to the cavers who started exploring here hundreds (if not thousands) of years ago. There is no place darker than the depths of a cave...turn the lights out and it is the blackest black. These early explorers were lowered into the unknown with ropes tied around their waist. They had only reed torches to light their way, and they had to hope and pray they had enough light to find their way out. If the torch went out, or they lost their way, they were done. And yet, they continued to explore further into the cave each and every time. They explored miles and miles of Mammoth Cave with nothing but these basic tools and an incredible sense of adventure. What a testament to human curiosity .
Mammoth Cave National Park (6 of 59)
Shot with FUJIFILM X-T1 and XF16-55mm F2.8 lens

Photo by @jonathan_irish // Photographer and former Nat Geo staffer Jonathan Irish (@jonathan_irish) is on an epic road trip to visit and create incredible content in all of the 59 U.S. National Parks in 52 weeks during the centennial of the National Park Service. He'll be sharing his images and stories along the way here, on his own Instagram feed, and on the following link at Nat Geo: www.natgeo.com/59in52 . #59in52 #onassignment

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