Near what is now Signal Hill at the end of Fort Peck Lake, Captain William Clark first viewed and named the Milk River as it enters the Missouri River. Lewis and Clark correctly concluded that it was the same river the Hidatsa at Fort Mandan called the “River Which Scolds at All Others.” Meriwether Lewis wrote on Wednesday, May 8, 1805, that the river’s water had a peculiar whiteness, like tea mixed with a tablespoonful of milk, and that Clark had climbed a very high point opposite its mouth and gained a perfect view of the river and the country through which it passed. In the same neighborhood, Lewis also noted the abundant white apple, or Psoralea esculenta, also called Indian Bread Root, which he thought would be admired for use in ragouts and gravies instead of truffles morella.