Marmes Rockshel salvage excavation and flood episode
- Date of account
- 1972–1978
- Location
- Lower Snake River, Washington, United States
- Source
- model_recalled_reference
- Record updated
- 2026-10-10
Record summary
Marmes Rockshel became a major archaeological case after the construction of Lower Monumental Dam threatened the site and emergency work followed flooding in 1969–1970. Subsequent investigations documented deeply stratified occupations, burials, and environmental evidence in a protected rockshel setting. The lead matters for comparing early settlement, preservation, and the effect of modern catastrophe on archaeological evidence. Claims for extreme antiquity and the interpretation of some deposits have been debated, making excavation records, radiocarbon determinations, and stratigraphic observations essential.
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