Columbia River

Rock Fort

Mile 189.2 Left Bank

Lewis & Clark Event

Trail Reference · October 25–August 25, 2026

Source Data

Left bank: Rock Fort

Notes: 10/25-27/1805, 4/15-17/06

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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