FBZ Missions  
  · Stone of the Lost Valley
· The Bunkers
· Mission Gorge
· Rock River Burial Mound
· Supernatural Supernova
· Little Green Men
· The Forbidden Zone
· The Doomsday Bomb

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Don't have an account yet? You can create one. As a registered user you have advantages such as the ability to display and track your Operation Silverback progress, earn points, upload images, and post comments in the forum.

  Journal Entries  
 
· Search 2026 [1/15/26]
· Agent Field Report [8/25/25]
· FBZ 54 Revisited [7/8/25]

[ See More Journals ]

  Silverback Cipher  
 
Silverback hunters should be familiar with the “pigpen” or masonic cipher, which is a simple substitution cipher exchanging letters for symbols based on a grid.

This cipher can be used to decrypt directions and secret codewords at FBZ geocaches!

  External Links  
  · 1: The CIA Vault
· 2: The FBI Vault
· 3: Project Blue Book
· 4: Aliens the Truth
· 5: The Black Vault

Surveillance Images

Photos shown here may yield clues to secrets at Forbidden Zone geocache locations!

Main Page :: Slideshow ::
Most viewed :: Last uploads :: Top rated :: Last comments


rock_clouds.jpg
276 viewsValley Rain Clouds
rusty_gates.jpg
The Gates to Tartarus?-40 viewsRusty Gates
mcCain_valley.jpg
296 viewsThe Lost Valley
turtle_rock.jpg
245 viewsTurtle Rock
ammo_rock.jpg
239 viewsFBZ A.P.E. 51
rock.jpg
211 viewsThe Sacred Stone
skull.jpg
221 viewsShaman Burial Spot
SkullB_P.jpg
196 viewsMy 2 nephews having a blast!
trailhead.jpg
200 viewsUs at the trailhead.
carrizo-gorge-railway.jpg
194 viewsDon't miss the fantastic overlooks in this area including an inspiring view of San Diego & Arizona Eastern Railway ("The Impossible Railway") trestle in Carrizo Gorge. Photo taken from Sacatone Overlook. To get there, take the Sacatone Spring Road spur (high clearance vechicles only) off McCain Valley Road 2.8 miles north of Old Highway 80.
FBZ zone.jpg
237 viewsEntire FBZ zone
Stone of the Lost Valley.jpg
177 views
61 pictures on 6 page(s) 1


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   Operation Silverback Prize Ring SILVERBACK Prize Rings

Those who create an account on fbz.geocaches.org and enter mission codewords and POTAM tracking bug numbers receive points towards an Operative ranking. Operatives who achieve the rank of General (700 points) are eligible to receive an official silver Operation Silverback GC.com trackable ring from Oakcoins. Gold rings are available for those who reach the rank of Green Beret (or higher).