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. On May 4, 1912, women in white paraded through the streets of New York City. Some 10,000 people marched to Carnegie Hall, where leaders in the women’s suffrage movement rallied their supporters. Just outside, another woman spoke from a makeshift perch. “In the vestibule,” read a New York Times account of the event, “Miss Annie S. Peck, the mountain climber, mounted…