Theodore Roosevelt Presidential LibraryPublic Lands Directory

Alerts and conditions

Weather Frost Advisory issued November 8 at 9:57AM EST until November 9 at 9:00AM EST by NWS Wilmington OH

* WHAT...Temperatures as low as 35 will result in frost formation.

* WHERE...Portions of southeast Indiana, northeast and northern

Kentucky, and central, south central, and southwest Ohio.

* WHEN...From 1 AM to 9 AM EST Monday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive

outdoor plants may be killed if left uncovered.

What to do: Take steps now to protect tender plants from the cold.

Read the full alert · Until Nov 9, 2026, 2:00 PM

Overview

Nearly 2000 years ago, Native Americans built dozens of monumental mounds and earthen enclosures in southern Ohio. These earthwork complexes were ceremonial landscapes used for feasts, funerals, rituals, and rites of passage associated with a Native American religious movement that swept over half the continent for almost 400 years. Come walk among the earthworks and experience the past.

From the National Park Service

History

The designation history for this site (every law, proclamation and order, and the administration behind each) is being researched and checked by the Library’s historians.

What to see and do

Activities

  • Arts and Culture
  • Biking
  • Road Biking
  • Food
  • Dining
  • Guided Tours
  • Self-Guided Tours - Walking
  • Junior Ranger Program
  • Museum Exhibits
  • Shopping
  • Bookstore and Park Store

Browse hiking, biking and paddling routes on AllTrails

Plan your visit

Hours

Park Grounds: The park grounds at Mound City Group, Hopewell Mound Group, Hopeton Earthworks and Seip Earthworks are open every day of the year, during daylight hours. All park grounds officially close at sunset and re-open at sunrise.

Getting there

Take U.S. 23. Exit U.S. 23 at State Route 207 and turn right. Continue on S.R. 207 for 2 miles until it merges with S.R. 104 (Make no turns, continue straight on road as it turns into S.R. 104). Follow S.R. 104, turn left into park (approximately 1.8 miles past the S.R. 104 & S.R. 207 intersection), follow entrance road to visitor center.

Visitor centers

Weather

The park lies in a humid continental zone with a generally temperate climate. Winters are mildly cold with average temperatures around 30 degrees (F). Summers are hot and humid with an average temperature around 75 degrees (F). Average annual total rainfall is just under 38". Snowfall in the winter is generally light with an average total snowfall of less than 24".

Phone: 7407741125

Whose lands these are

These lands are the ancestral and present-day homelands of Native nations. A section on whose lands these are is being prepared with tribal review. In the meantime, Native Land Digital offers a starting point.

Photos

A tan building with a red-peaked roof surrounded by green grass and tan sidewalks
The Mound City Group visitor center · NPS / Tom Engberg
A green, grassy field with taller areas of uncut grass in geometric shapes under a partly cloudy sky
Hopeton Earthworks · NPS / Tom Engberg
An overlook area showing a green grassy field with a panel showing artwork and text
Hopewell Mound Group overlook · NPS / Tom Engberg
A grassy trail running between tall trees in a green field leads to a large grass-covered mound
Seip Earthworks · NPS / Tom Engberg
A tan-orange curved information desk with a man sitting behind the counter
Ranger Desk · NPS / Tom Engberg
Several children walking with a park ranger in a flat hat near grass-covered mounds.
School field trips at the park · NPS / Tom Engberg

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