Where is the giant's causeway-style basalt landscape of the Columbia Hills?

The Columbia Hills are part of the broader volcanic terrain associated with the Columbia River Basalt Group in the Pacific Northwest of the United States. Their rocks and landforms were shaped by repeated flood-basalt eruptions that covered huge areas of the region. This volcanic province is one of the clearest examples of large-scale lava flooding on land. The resulting terrain includes cliffs, benches, and layered basalt exposures that geologists use to reconstruct eruption history.