Tsagaglalal (She Who Watches) is the best-known figure at a protected rock-art site on the basalt rim above the Columbia River, in the Horsethief Lake section of Columbia Hills Historical State Park. It is part of living tribal heritage, and this is not an open roadside stop: visitors enter the site only on a reserved, guided tour. Book first and wait for confirmation before making the drive.
The seasonal tour schedule is limited, usually at 9 a.m. on Fridays and Saturdays from April through October, with no more than 20 people per group. Check the current calendar when booking; dates and availability change from season to season.