On June 12, 1805, Captain Lewis left Grog Springs, climbed to the plains, and headed "West of S.W." with Drewyer, Gibson, Goodrich, and Joseph Field. After a twelve-mile hike, they returned to the river for water, killed two large grizzlies, and ate part of one. Lewis left a note for Clark telling him of his progress. The men climbed back onto the plain, walked twelve more miles, and returned to the river to camp, where they caught a dozen fish using deer spleen as bait. The next morning they returned to the prairie, where Lewis remarked on a beautiful, level plain of great extent and noted the Snowy Mountains to the south, along with more buffalo than he had ever before seen at one view. After another twelve-mile walk, Lewis heard the agreeable sound of falling water and, a little farther on, saw what he thought was a plume of smoke. At last, they had found the Great Falls of the Missouri.