This rock outcropping along the Yellowstone River was an important stopping point for travelers, and many left messages in the rock. This was one of Lewis and Clark's stops and Clark's signature can be found here.
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Categories & Keywords
Category:Travel and Places
Subcategory:North America
Subcategory Detail:United States of America
Keywords:Lewis and Clark, MT, Montana, National Monument, Pompeys Pillar, US, USA, United States