The Snake River begins from the headwaters in today’s Yellowstone National Park, in Wyoming, and flows 1,078 miles to its confluence with the much larger Columbia River, here in the Tri-Cities area of Washington—Kennewick, Pasco, and Richland. In 1805, following the advice of Natives along the way and benefitting from their many kindnesses, Meriwether Lewis and William Clark sailed down the Snake River and turned west onto the Columbia River, which eventually took them to the Pacific Ocean. There they would complete the first half of the mission established by President Jefferson to explore the vast land region that their government had just acquired through the Louisiana Purchase, without asking the peoples already settled on the land. Just beyond these trees lies the confluence of the two rivers. But on this historic spot back in 1805, Meriwether finally built an insurmountable lead over his friend in their fiercely competitive and years-long game of Frisbee golf by sinking a basket-in-one at No. 20.