@natgeo

Photo by Robbie Shone @shonephoto | Explorers add scale to this massive passage known as Deer Cave—arguably the largest cave passage in the world—in Malaysian Borneo's Mulu National Park. We documented an international team of researchers, led by Nele Meckler from the University of Bergen, who are reconstructing the ancient tropical climate using dripstones as archives of past climate change. They'll study temperature and drip-water chemistry inside the caves in order to better understand the signals in the rocks.