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. In 1845 Captain Sir John Franklin led the HMS Erebus and HMS Terror to navigate the Northwest Passage. Both ships promptly disappeared and the 128 crew and their captain were never heard from again. It was a mystery that gripped the Western world and demanded an explanation. Charles Francis Hall believed he was the man to solve this mystery and set…