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Effigy Mounds National Monument

Know Before You Go

Designation
National Monument
State
IA
Park address
Harpers Ferry, IA
Entrance fee
No entrance feeNPS data as of 2026-08-25
Check current conditions on the official NPS site

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Notes

  • Designation Date: 10/25/1949

  • The mounds preserved here are considered sacred by many Americans, especially the Monument's 20 culturally associated American Indian tribes. A visit offers opportunities to contemplate the meanings of the mounds and the people who built them. The 200 plus American Indian mounds are located in one of the most picturesque sections of the Upper Mississippi River Valley.

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