Beginning near Wallowa Lake in eastern Oregon, the Nez Perce headed east into Idaho. They crossed Lolo Pass into Montana and fought a major battle at what is now known as Big Hole National Battlefield. After that, the Nez Perce continued traveling south and east, back into Idaho and then into Wyoming entering Yellowstone National Park near West Yellowstone, Montana. The tribe left the park crossing Sylvan Pass and followed the Clarks Fork River back into Montana. From there the Nez Perce headed almost straight north for Canada and almost made it. The Nez Perce were near starvation and exhaustion after fighting their last battle north of the Bear Paw Mountains, less than 40 miles (64 km) from the Canada-US border, when they surrendered to U.S. authorities. Chief Joseph is widely credited with leading the Nez Perce on this journey. He served as a camp supervisor and guardian, who was entrusted with handling the logistics of camp and travel, and taking care of the women and children.