A Premium Member Only (PMO) cache is a cache listed at Geocaching.com that can be viewed only by premium members. Owners of PMO caches are able to view an audit log that shows which members have viewed the page. You can only hide a PMO geocache if you are a premium member yourself. Charter Member's also have access to all the benefits of Premium Membership.
The benefits of premium membership at Geocaching.com include the ability to view PMO caches, and the ability to list PMO caches. Basic members are not able to view PMO cache listings, although they are able to post logs for PMO caches that they find (e.g., on a geocaching trip with a premium member).
The perks of being a Geocaching Premium member just got better. Besides unlocking the powerful search and listing tools on the website, now when you sign in to the free official Geocaching App, you’ll have a few extra features:
List View – See geocaches in a new way with the List View.
Filters – Filter your geocache search results by distance, Favorite Points, size, difficulty and terrain.
The perks for Geocaching Premium members will keep getting better and better as we upgrade our app. Stay tuned for more and if you haven’t yet, upgrade to Geocaching Premium.