Palouse Falls State Park
“The Palouse River runs through a narrow cataract and drops 200 feet to a churning bowl. From there, the current moves swiftly, through a winding gorge of columnar basalt, to its southern end at the mighty Snake River.”
Here is the Park website. There is no phone service at the park, and staff and volunteer hosts are not always available. Brochure Phone for information 509- 646-9218
There is a 0.1 mile ADA trail to a view of the falls. Thank you, JP Bruce for the suggestion and the photo.