Columbia River

Ortley Anticline / Ortley Pinnacles

Mile 182.8 Both Bank

Source Data

Left bank: Ortley Anticline

Right bank: Ortley Pinnacles

Memorial Contribution Documented by Robert Heacock (1957–2025), from Wind Hard from the West: The Lewis and Clark Expedition on the Snake and Columbia Rivers (2015), used by permission of his family.

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