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Cave-In-Rock in Hardin County, Illinois — The American Midwest (Great Lakes)
 

The Cave

Lewis & Clark Expedition

— 1803-1806 —

 
 
The Cave Marker image. Click for full size.
Photographed by Jason Voigt, August 11, 2020
1. The Cave Marker
Inscription. This natural cave located nearby was known to European explorers as early as 1729. Its location was noted in diaries and journals of travelers. It was noted on maps used by Lewis and Clark.

Late in the 18th century, The Cave was the habitat for robbers, thieves, and gangs. These malefactors included Samuel Mason and the Harpe Brothers.

Knowing of the cave's history, Lewis and Clark would have approached this point with caution.
 
Erected 2003 by The Illinois Lewis and Clark Bicentennial Commission.
 
Topics and series. This historical marker is listed in these topic lists: ExplorationParks & Recreational Areas. In addition, it is included in the Lewis & Clark Expedition series list. A significant historical year for this entry is 1729.
 
Location. 37° 28.113′ N, 88° 9.979′ W. Marker is in Cave-In-Rock, Illinois, in Hardin County. It is at the intersection of Canal Street (Illinois Route 1) and Market Street, on the right when traveling south on Canal Street. Touch for map. Marker is at or near this postal address: 100 Canal St, Cave in Rock IL 62919, United States of America. Touch for directions.

Regionally,
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this marker is in Southern Illinois — Little Egypt and in Shawnee Hills. It is also in the American Midwest, in the Ohio River Valley, and in the Corn Belt. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once the territory of the Mississippian Culture and also the Northwest Territory.

Other nearby markers. At least 8 other markers are within 8 miles of this marker, measured as the crow flies: Lewis and Clark in Illinois (here, next to this marker); You Are Not Forgotten (a few steps from this marker); Geologic Wonder (approx. 0.4 miles away); Deer Creek Furnace / Iron Made in Kentucky (approx. 3.9 miles away in Kentucky); Hurricane Furnace / Iron Made in Kentucky (approx. 3.9 miles away in Kentucky); Civil War Action (approx. 7.3 miles away in Kentucky); War Memorial (approx. 7.8 miles away); a different marker also named You Are Not Forgotten (approx. 7.8 miles away). Touch for a list and map of all markers in Cave-In-Rock.
 
The Cave Marker image. Click for full size.
Photographed by Jason Voigt, August 11, 2020
2. The Cave Marker
Next to the other marker placed by the Illinois Lewis & Clark Bicentennial Commission, as well as the Lewis & Clark silhouette sculpture that is commonly found near these markers.
 
 
Credits. This page was last revised on August 20, 2020. It was originally submitted on August 20, 2020, by Jason Voigt of Glen Carbon, Illinois. This page has been viewed 441 times since then and 11 times this year. Photos:   1, 2. submitted on August 20, 2020, by Jason Voigt of Glen Carbon, Illinois.
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Jul. 14, 2026