In the nineteenth century, the Owens River was first seen by American explorers. One of the first explorers was John C. Fremont, who led a cartographic expedition to the Owens Valley in 1845. His party included Kit Carson, Edward Kern and Richard Owens, the latter for whom the river, lake and valley are named. Other well-known adventurers included Jedediah Smith and Joseph R. Walker, who also came into the area in the 1800s. Gradually, the river's surroundings were settled by farmers and ranchers. The valley never accumulated a very large population, but mining activities brought significant income to the new inhabitants of the area. Ore was shipped down the Owens River from the north, and also borax and silver from Death Valley to the east. Up until 1924, Owens Lake was still so large that a steamboat ferry operated between its east and west sides, ferrying freight and passengers across in three hours, much less than the three days required to semi-circumnavigate the lake. In 1872, the Lone Pine earthquake killed 27 people in the Owens Valley, mostly in Lone Pine.