Linked from
The 14 pages that link to Columbia River Basalt Group, each with the reason it gives.
BasaltBroader topic: It is a major continental example of basalt erupting over a broad region.
Celilo FallsRelated: These layered rocks framed the river channel and the falls' geological setting.
Columbia PlateauBroader topic: These flows form the plateau’s underlying volcanic foundation.
Hells CanyonRelated: Its lava flows form much of the canyon’s exposed rock, cut by the Snake River.
Multnomah FallsNarrower topic: Layered basalt forms the cliffs over which Multnomah Creek descends.