Lewis & Clark National Historic Trail

Lewis and Clark first met Yellept (sometimes spelled Yelleppit) at the chief’s village near the mouth of the Walla Walla River in the fall of 1805 and were so impressed by him they promised to spend more time when they returned the following spring.

Indigenous nations who helped the Lewis and Clark Expedition succeed are now tackling climate change problems in their homelands.

The city that launched the Lewis and Clark Expedition fights back against climate change.

Warmer winters are allowing pine beetles to kill more of the large trees Lewis and Clark relied upon to make canoes.