For Women’s History Month, Atlas Obscura is living on the edge with Women of Extremes, our series dedicated to those who dared to defy expectations and explore the unknown. A woman in a red parka and a knitted cap wanders calmly along. Except for the lava spewing behind her, she could be walking in the park. The woman has a hand raised, as if against the heat, but seems otherwise unperturbed. She turns to watch the molten rock flow for a moment then walks calmly toward the camera. The footage…