This picture taken on March 28, 2016 shows Indonesian tourists taking selfies at a mud volcano area in Sidoarjo, East Java. A mud volcano that erupted in central Indonesia a decade ago and swallowed entire villages is still oozing its all-consuming sludge, but for some entrepreneurial locals it has provided an unlikely business opportunity. "Mud tourism" is booming, as visitors flock to see rooftops poking above the giant bubbling lake, life-size statues made of mud and haunting memorials to one of the countrys worst environmental disasters. / AFP PHOTO / ADEK BERRY / To go with AFP story 'Indonesia-science-mud-volcano-tourism',FEATURE by Nick PerryADEK BERRY/AFP/Getty Images
