128 miles W of Pendleton, 85 miles E of Portland, 133 miles N of Bend

The Dalles (rhymes with "the pals"), a French word meaning "flagstone," was the name given to this area by early-19th-century French trappers. These explorers may have been reminded of stepping stones or flagstone-lined gutters when they first gazed upon the flat basalt rocks that forced the Columbia River through a long stretch of rapids and cascades here. These rapids, which were a barrier to river navigation, formed a natural gateway to western Oregon.

For more than 10,000 years, Native Americans inhabited this site because of the ease with which salmon could be taken from the river as it flowed through the tumultuous rapids. The annual fishing season at nearby Celilo Falls was a meeting point for tribes from all over the West. Tribes would come to fish, trade, and stockpile supplies for the coming winter.

Although the Lewis and Clark expedition stopped here when they passed through the region in 1805 and 1806, white settlers, the first of whom came to The Dalles as missionaries in 1838, were latecomers to this area. However, by the 1840s, a steady flow of pioneers was passing through the region, which was effectively the end of the overland segment of the Oregon Trail. Pioneers who were headed for the mild climate and fertile soils of the Willamette Valley would load their wagons onto rafts at this point and float downriver to the mouth of the Willamette, and then up that river to Oregon City.

By the 1850s, The Dalles was the site of an important military fort and had become a busy river port. Steamships shuttled from here to Cascade Locks on the run to Portland. However, the coming of the railroad in 1880, and later the flooding of the river's rapids, reduced the importance of The Dalles as a port town. Today the city serves as the eastern gateway to the Columbia Gorge and, as such, is the site of the Columbia Gorge Discovery Center.