Gift ExploreHere Pro
2 photos
HISTORY · HISTORICAL MARKER
1815 Treaty
Elsah, Illinois
· Between All Warring Indian Tribes and the U.S.
Historical Marker Database · Jason Voigt
History
2
THE STORY
Narrated · Plays hands-free in Travel Mode
The overland escape route of Sioux Indians between the Mississippi and Missouri Rivers gave Portage des Sioux its name.
FIND IT
NEARBY MARKERS
Katy Trail State Park
Transportation
Grafton
Transportation
Alton Military Prison
Military
The Alton Military Prison
Military
Those Who Remain
Military
Lovejoy Assassination Site
History
CONTRIBUTED BY
Historical Marker Database
CITY · 10 STOPS
Explore Elsah, Illinois
Hear every story as you drive
Get the App
4.8 Stars · 800+ Ratings
App
Download
Privacy
Review
FAQs
Contribute
Pricing
Gift Pro
Company
About
Journal
Company Updates
App Updates
Community
Partners
© 2026 MainEngine
