It is a slow and cumbersome descent hindered by head-to-toe protective suits. A wooden ladder dips down the side, as two researchers in white suits and respirators make their way into Grootboom cave in South Africa.
원문출처 : http://www.cnn.com/2016/08/23/health/virus-hunters-bat-cave-south-africa/index.html
원문출처 : http://www.cnn.com/2016/08/23/health/virus-hunters-bat-cave-south-africa/index.html