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  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!

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

 << SGTF Special Operations
POTAM Karubi
Geocaching Reference Number TB2T4N8

Worth 10 Points (Create an account to enter TB tracking number and earn points!)

 
POTAM Karubi Tracking Bug ImageCurrent GOAL:
Your TOP SECRET mission (codename KARUBI) is to further this Special Reconnaissance (SR) evidence through any means possible to help it reach its destination at N 37° 50.758 W 121° 56.068 (GCWBRF), the "Return to Planet of the Apes" California Command Center (formerly Devil's Spoon) in Mt. Diablo State Park.

About this item:
SGTF speculates this material may have been worn by Karubi in the 2001 Tim Burton film, Planet of the Apes. Per SGTF's AOR under Operation Silverback, operatives to forward this materials item to the GCWBRF cache for further exploration have been initiated.

Please do not keep this TB if you DO mistakenly remove it from the Project APE cache. Drop it in a cache somewhere for another person to find and perhaps the mission will be completed again!
  
   
     

Operatives who have logged this TB...

  • Honorable Discharge CONDORMAN
    •  (Mon 15 Feb 2010 @ 19:05:11 GMT; 1266260711 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Honorable Discharge DUCK432
    •  (Wed 24 Mar 2010 @ 11:40:09 GMT; 1269430809 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Honorable Discharge THEJJDUO
    •  (Sat 27 Mar 2010 @ 17:17:58 GMT; 1269710278 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Honorable Discharge MIKE6X6
    •  (Fri 30 Apr 2010 @ 16:35:44 BST; 1272641744 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Honorable Discharge DICKANDALE
    •  (Sun 10 Mar 2024 @ 13:47:17 GMT; 1710078437 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Green Beret FEBONIOCLAN
    •  (Sun 12 May 2024 @ 18:12:48 BST; 1715533968 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Honorable Discharge MPARK65
    •  (Sun 19 May 2024 @ 11:27:38 BST; 1716114458 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Honorable Discharge MIKE2FIND
    •  (Thu 20 Jun 2024 @ 4:29:30 BST; 1718854170 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Honorable Discharge ROCKCHALK
    •  (Sat 08 Mar 2025 @ 20:05:58 GMT; 1741464358 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Honorable Discharge BROTHERSELDOM
    •  (Sat 08 Mar 2025 @ 22:31:16 GMT; 1741473076 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Honorable Discharge TREKKERDMC
    •  (Sun 09 Mar 2025 @ 14:02:06 GMT; 1741528926 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Honorable Discharge FLAGMAN
    •  (Mon 07 Jul 2025 @ 6:19:36 BST; 1751865576 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  • Major TURTLEX
    •  (Wed 01 Apr 2026 @ 15:12:42 BST; 1775052762 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
   

 


*Disclaimer: Stories here and at FBZ caches are a combination of historical conjecture, anecdote and pure fiction. Any similarity to any event, group, or person living or dead is merely coincidental. Additionally, SGTF has utilized a variety of signs/stickers as props in the FBZ geocaching series. Labels or warnings (e.g. biohazard, radioactive, etc.) which are fictitious will display some form of the SGTF/Silverback moniker; all other warning signage encountered during this or any other FBZ adventure should be respected and observed as posted.


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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).