Karina Oliani, a 35-year-old woman, becomes the first person to traverse the world's largest permanent lava lake, which is in Ethiopia's Erta Ale Volcano. /VCG Photo

Karina is one of Brazil's most popular explorers. She is a doctor, the CEO of a production company, a helicopter pilot, a diver, a snowboarder, a wakeboarder and a mountaineer. /VCG Photo

She has a passion for adventure and has recently returned from an expedition to the Ethiopia-Danakil Depression－one of the most inhospitable regions on Earth. /VCG Photo