"If you hide it, they will come."
OPERATION Worldwide Cache Hide is brought to you by these fine sponsors
Welcome to OPERATION Worldwide Cache Hide. The purpose of this endeavor is to bring together geocachers from around the world to hide creative caches that will be mass-published on a specific day. This project is designed to promote creativity, community interaction, and some good old fashion fun. Below you will find all the details you need to know in order to participate..
Cache Creating Guidelines
WHAT TO CREATE
1.) Your hide must be themed to the current project subject.
2.) You may use the container type and size of your choice.
3.) You may make it any cache type you want (Traditional, Mystery, etc.)
HOW TO SET UP YOUR CACHE TO BE PUBLISHED
1.) Submit your geocache hide page to your local reviewer by no later than 14 days prior to the publishing date of the current cache hide project.
2.) Include the following note to your reviewer:
"The cache IS NOT ready to be published yet. This geocache is part of a series that will be published on May 8th 2027 @ 8am. If everything checks out, please set up the geocache for publishing at that time."
Note: Also Include other reviewer information about your hide such as container description and how it was hidden.
3.) Place the project's OFFICIAL LOGO at the bottom of the cache page.
4.) Use the current project prefix, OPERATION Dino, at the beginning
of the title of your geocache hide to identify it as part of this
geocache series.
Note 1: When you submit the cache page, make sure it is completed because when the reviewer sets up the publishing timer for the current promotion, they will lock the cache page, and no further changes can be made until it’s published.
Note 2: The publishing time will be 8am no matter what time zone you are in.
What to do When
Your Geocache Gets Published?
1.) Change the HIDDEN DATE on the cache page to the date the cache was published.
2.) On the day your cache is published, email the cache page link to geocachingcentral@aol.com. At that time your cache hide will be
added to the official Bookmark List for the project and you will receive your participation badge.
Send in a Photo
(optional)
When your container is completed for the current project, email 1 image to geocachingcentral@aol.com along with your geocache name plus the state/province and country you live in. All container images will be displayed in the project's image gallery.
Current Project
"OPERATION Dino"
Dinosaurs or anything associated with them
form prehistoric to modern times
Your themed geocache is to be published on:
Saturday, May 8th, 2027 at 8am
Starting in 2027, OPERATION Worldwide Cache Hide will
take place each year on the 2nd Saturday in May.
"MARK IT ON YOUR CALENDAR"
Official LOGO
Place this Official Logo at the bottom of your cache page to identify your hide as part of the project.
Event Host Personalized Badge
Help spread the word about the current project by hosting an event. All Event Hosts (the caching account the event is published under) will receive a digital personalized host's badge to proudly display on their geocaching account profile page. To claim your badge, do the following:
1.) Select an event date, at least 1.5 months prior to the current project's publishing date, to inform potential hiders and talk about cache building.
2.) Use the current project prefix OPERATION Dino at the
beginning of the title of your event to identify it as part of this series.
3.) Place the Official LOGO Image at the bottom of the event page.
4.) When the event page is published, send the page link to geocachingcentral@aol.com.
Note: Any geocachers who hosts a KICKOFF event on the current project's mass cache publishing date, are also eligible for the event host badge.
Cache Hider Participation Badge
All cachers who hide at least 1 geocache for the current project and have it published on the project's mass publishing date, will receive a digital participatant's badge that can be displayed on their geocaching account's profile page. After your published hide has been place on the Bookmark List (see above), your badge will be emailed to you.
The Official Trackable
REX is the official trackable of the 2027 'OPERATION Dino' project. Use code XTWC1G
to discover REX by clicking on the image.
T-Shirts
Look great while you hide your themed cache in an OPERATION Worldwide Cache Hide t-shirt.
Click in the t-shirt icon to order. (more colors)
Trading Cards
Don't leave home for your geocaching activities without a personalized trading card to give out.
Click the card for more details.
Updates & News
04.20.2026 - All statistics from past projects can be found by clicking the PAST PROJECTS option on the menu at the top of the page.
04.15.2026 - Because of the 2026 prehistoric theme, for this upcoming project, OPERATION Worldwide Cache Hide will also encourage creatively fashioned prehistoric themed earthcaches with artistically built pages.
04.14.2026 - JenOvations from Ohio, USA adds an interesting Monopoly piece into the Image Gallery.
04.13.2026 - DRUM ROLL PLEASE - Here are the final stats for the 2026 OPERATION Gamer Project - 104 Geocaches Hidden from 9 Countries - Australia, Canada, Hungary, Ireland, Japan, Netherlands, New Zealand, United Kingdom, and the United States. Highlights this year were
a 20-cache gamer-themed Geoart created in California by Zumby65, and a huge turnout of themed caches by the geocachers in
Budapest, Hungary, which was coordinated by project manager, PaLEOL, with 8 hides by Cimbora. revised 4/25/2026
Thank you to everyone worldwide who participated. It was all of you who made this project a smashing success. I look forward to your creativity next year when the dinosaurs take over the planet.
04.12.2026 - ANNOUNCEMENT - Starting next year, all OPERATION Worldwide Cache Hide projects will be published on the 2nd Saturday in May.
This way you can also receive the hider's souvenir that Geocaching HQ offers during their Big Blue Switch Day promotion. So, mark it on your calendars and start to plan.
DNTOKENS from New York adds his masterpiece to the Image Gallery.
04.11.2026 - The 4th Annual OPERATION Worldwide Cache Hide has been launched. Since this is a worldwide project, this page will be updated often today as the world turns.
More additions to the Image Gallery: pood - Western Australia, Australia, RN escape - Pennsylvania, USA - Wogram - Netherlands, and
DreamMachine74 - Ontario, Canada, and psteelman1 - Oklahoma, USA.
04.04.2026 - A message to all OPERATION Gamer cache hiders, from Cache Hunters - "All cachers that hide a cache for OPERATION Gamer are eligible for a free OPERATION Worldwide Cache Hide Cache Hunters trading card. After April 11th, I will be contacting you through the geocaching messenger, with instructions on how to claim your card."
All published hides for OPERATION Dino will also receive the Geocaching HQ Hider's Souvenir for the BIG Blue Switch Day promotion.
Because of this year's theme, why not think outside the box and create a prehistoric themed Earthcache with unique graphics on the cache page.
