2021 Warren County Parks & Trails Geocaching Constellation Adventure

Grab your GPS, your binoculars and hiking boots, and get ready to explore! Find all 25 geocaches and collect the trading cards, April 1st- November 1st 2021. 


What is Geocaching? 

Geocaching is a real-world, outdoor treasure hunt using GPS-enabled devices. Participants navigate to a specific set of GPS coordinates and then attempt to find the geocache (container) hidden at that location. It is a world-wide hobby!

What is the Geocaching Fish Adventure?

There are 25 Geocaching Constellation Adventure Caches hidden in county, state and city parks around Warren County. Your challenge is to explore parks and find them all using a GPS. Each cache includes an instruction card, a logbook, and a stack of constellation trading cards. Sign the logbook to show that you found the cache and take a constellation trading card for your collection. Discover the parks in the evening or your back yard and see if you can find each constellation.

After finding all 25 caches, take your 25 fish trading cards to the Annett Nature Center. We will give you the coordinates to find the last cache challenge. Take a picture of yourself with the very last card or all of your trading cards. Feel free to include family, friends, your dog or anyone else that helped you finish the challenge. All participants who successfully finish the challenge by November 1, 2021 will receive a finishers medal and your photo will be posted on our Facebook page as Geocaching Adventure Finisher. Then, take the winter months off and check back in the spring for the next geocaching theme.

Constellation Delight!

This is the 8th year of the Warren County Geocaching Adventure. We have done birds, insects, mammals, wildflowers, reptiles, trees, fish, and now constellations. This year we decided to tell the story of the night sky. Discover the constellations in the park or your own backyard. So grab your hiking boots, comfy clothes, blanket, and enjoy some stargazing.

To Have a Habitat! 

Warren County is rich in natural diversity, providing essential habitat for a variety of plants and animals. During the adventure, you can explore Iowa’s four major habitats, woodlands, wetlands, prairies and river. Warren County Conservation and our state and city partners preserve and manage significant fragments of these essential natural landscapes, making them great sites for flowers, wildlife, and park visitors. Be extra observant while you look for the geocaches, you’ll be amazed at the natural wonders you can find in our parks!

Get Started Today!
• Download all the coordinates from below onto your GPS
• Use the GPS device to determine your location in relation to the cache. The GPS device will show you how far away and in what direction the cache is hidden.
• Find the cache, sign the logbook and take your trading card
• Create a free account on and log your finds. The 25 caches can be found by searching for “WC Constellation Adventure” ( You can also download coordinates straight to you GPS from here or use the Geocaching app on your smartphone to find them)

Don’t know where to start? 

We welcome you to stop in at the Annett Nature Center to learn more about geocaching. Staff can provide helpful tips and info about geocaching during our business hours.  It’s best to give us a call at 515-961-6169 first before stopping out.

Rules of the Game 

Keep geocaching fun, safe and ethical by following the common-sense rules:
• Stay on marked trails wherever possible
• Tread lightly on the land and minimize impacts on the environment. Caches were placed above the ground in relatively well-traveled areas. There should be no need to disturb natural features to find a cache.
• Never remove or relocate a cache. Once you find it, open it to claim your prize, but then put it back exactly where you found it.
• You may find small trinkets left by other participants inside the cache. If you find one, it’s yours to keep. You can choose to leave a trinket for the next Adventure geocacher.
• Observe all laws and rules of the park.
• If you have trouble locating a cache, call us at 515-961-6169 for hints and tips.

2021 Geocaching Constellation Adventure Coordinates will be active on April 1, 2021 at 6AM on or enter the coordinates below. 2021 Coordinates pdf

Annett Nature Center (ANC)

N 41 17.669

W 093 34.534

Bank Swallow Bend 1

N 41 20.967

W 093 28.717

Bank Swallow Bend 2

N 41 20.471

W  093 29.112

Blue Flag Marsh

N 41 26.783

W 093 45.465

Carlisle City Park

N 41 30.417

W 093 28.990

De Nelsky Park

N 41 21.309

W 093 33.121

 Grant Park 1

N 41 25.709

W 093 20.183

Grant Park 2

N 41 25.476

W 93 19.946

Great Western Trail

N 41 26.552

W 093 45.459

Hickory Hills 1

N 41 10.760

W 093 36.637

Hickory Hills 2

N 41 11.057

W 093 36.722

Hooper State Game Area

N 41 16.611

W 093 34.997

Lake Ahquabi State Park

N 41 17.926

W 093 35.179

Lundy Acres 1

N 41 25.235

W 093 35.303

Lundy Acres 2

N 41 25.144

W 093 35.461

North River Greenbelt Swamp White Oak Tract

N 41 26.962

W 093 41.728

Otter Creek 1

N 41 14.786

W 093 31.992

Otter Creek 2

N 41 14.681

W 093 31.787

Rolling Thunder Prairie Complex Medora Prairie-this cache has been deactivated. Please stop by Annett Nature Center to pick up your card.

N 41 12.397

W 093 37.541

Summerset State Park

N 41 26.236

W 093 33.161

Summerset Trail

N 41 27.320

W 093 31.328

Woodland Mounds 1

N 41 20.867

W 093 25.963

Woodland Mounds 2 *updated 4/20/21 due to bees at original coordinates.

N 41 20.743

W  093 25.903

Zo-El Annett Woods 1

N 41 23.607

W 093 41.917

Zo-El Annett Woods 2

N 41 23.693

W 093 41.882

ANC Final

Once you have collected all 25 trading cards, stop by the Annett Nature Center for your final secret coordinates to collect the last card and receive a geocache finisher’s medal. Our hours are Monday-Friday 8AM-4:30PM. It is advised to call ahead as some duties require staff to be away from the nature center. 515-961-6169. Thank you for participating in this years adventure.

***Due to Covid-19 you are welcome to simply “log your find” on  and pick up cards from the Annett Nature Center at a later date. **

Want to hide your own cache?

To hide a cache at a Warren County Conservation property, please review our geocaching policy. A permit is required to place a geocache in WCCB. Details here.