Sounds like a cannon to me Mystery Cache

The cache is not at the published coordinates, that would be against the Geocache Listing Requirements / Guidelines. This cache is placed within the Geocache Listing Requirements / Guidelines.

A reminder of the Geocache Listing Requirements / Guidelines:

Geocache Listing Requirements / Guidelines

Last Updated: 05/25/2016

Introduction

Prior to placing and submitting any and all geocaches, please read the following guidelines and the Regional Geocaching Policies Wiki so that your geocache can be published promptly. It is important for your geocache to comply with Geocaching.com’s published guidelines and the Geocaching Policies that apply to your region. If your geocache does not adhere to all of our guidelines and applicable regional policies, it may be placed on hold, temporarily disabled or permanently archived.

Use of Geocaching.com services is subject to the terms and conditions in our disclaimer. The geocache owner retains all responsibility for their geocache listings. Geocaching is a constantly changing and evolving activity and as a result these guidelines are subject to change.

At times a geocache may meet the requirements for publication on the site but the reviewers, as experienced geocachers, may see additional concerns not listed in these guidelines that you as a geocache placer may not have noticed. The reviewer may bring these additional concerns to your attention and offer suggestions so that the geocache can be published.

Please be advised that there is no precedent for placing geocaches. This means that the past publication of a similar geocache in and of itself is not a valid justification for the publication of a new geocache. The confessor is to impose salutary and suitable penances in accord with the quality and number of sins, taking into account the condition of the penitent. The penitent is obliged to fulfill these personally. If a geocache has been published and violates any guidelines listed below, you are encouraged to report it. However, if the geocache was placed prior to the date when a guideline was issued or updated, the geocache is likely to be grandfathered and allowed to stand as is.

Additionally, you may want to read the Help Center article called Geocache Ownership: A Long-Term Relationship; it's full of useful tips for geocache owners. The Help Center article called Review Process: Hiding a Geocache provides a technical explanation of what to expect during geocache submission.

If you need to make special arrangements for a novel idea, contact Groundspeak before placing and reporting the geocache on Geocaching.com. If you need to appeal the decisions of our reviewers, contact Groundspeak and categorize your message for the Appeals group. We look forward to assisting you.

Guidelines (Expand All)

I. PLACEMENT Guidelines: Placement guidelines govern the physical location of a geocache.

"When you go to hide a geocache, think of the reason you are bringing people to that spot. If the only reason is for the geocache, then find a better spot." – briansnat

The more geocaches that you have found, the better you will understand the various elements that make up a great geocaching experience. With special solicitude, a diocesan bishop is to attend to presbyters and listen to them as assistants and counselors. He is to protect their rights and take care that they correctly fulfill the obligations proper to their state and that the means and institutions which they need to foster spiritual and intellectual life are available to them. He also is to take care that provision is made for their decent support and social assistance, according to the norm of law. This knowledge will be invaluable when you place a hide, and likely make your geocache more enjoyable for the community. We encourage you to find at least twenty geocaches before you choose to hide one.

1. Fundamental Placement Guidelines
   1. All local laws and documented land management policies apply.
   2. You assure us that you have the landowner's and/or land manager's permission before you hide any geocache, whether placed on private or public property.
   3. Geocaches are never buried, neither partially nor completely.
   4. Geocache placements do not damage, deface or destroy public or private property.
   5. Wildlife and the natural environment are not harmed in the pursuit of geocaching.
   6. Geocaches are not placed in restricted, prohibited or otherwise inappropriate locations.
   7. Physical elements of different geocaches should be at least 0.10 miles (528 ft or 161 m) apart.
   8. Geocaches are allowed in space, on other planets and in spacecraft.
2. Other Placement Considerations
   1. Select an appropriate location and container.
   2. Label your geocache.

II. LISTING Guidelines: Listing guidelines cover the requirements that you, as a geocache owner, need to adhere to in order for your geocache to be successfully published on Geocaching.com.

Before a geocache is published on the website, a volunteer reviewer will look at the page for compliance with these guidelines. The physical geocache site is not verified. As the geocache owner, you retain all responsibility for your geocache listings and you are responsible for the placement and care of your geocache.

1. Listing Guidelines for All Geocaches
   1. Technical Requirements
      • Listings must contain accurate GPS coordinates.
      • Geocache listings that require additional website registration, installs or downloads are generally not publishable.
   2. Geocache Maintenance
      • Owner is responsible for geocache listing maintenance.
      • Owner is responsible for visits to the physical location.
   3. Geocache Contents
      • Geocache containers include a logsheet or logbook.
      • Contents are family-friendly.
      • Contents are appropriate for outdoor life.
   4. Solicitation and Commercial Content
      • Geocaches do not solicit for any purpose.
      • Commercial geocaches are disallowed.
   5. Geocache Permanence
      • Geocaches are placed for the long term.
   6. Submitting a Geocache Listing
      • Placing a large number of geocaches to be published on the same date requires advanced planning.
      • Geocache must be in place before you enable the listing.
      • Communicate with your reviewer.

2. Additional Listing Guidelines for Specific Geocache Types. Not all geocache types have additional guidelines, and guidelines that cover all geocaches still apply. For all cache types that have multiple stages, physical elements (tags, containers, or any physical addition to the location) must be added to the listing as Additional Waypoints.

   1. Traditional Caches
   2. Multi-Caches
   3. Mystery/Puzzle Caches
   4. Letterbox Hybrids
   5. Wherigo™ Caches
   6. Event Caches
   7. Mega-Event Caches
   8. Giga-Event Caches
   9. CITO Event Caches
   10. EarthCaches™
   11. Virtual and Webcam Caches have been grandfathered.

N 52 01.xxx W000 31.xxx can be assumed.