Forbidden Zone Geocaches
 
   
 
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
· The Monkey's Triangle
· Warlock Mine
  
 


 
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Journal Entries
  
 
 
· The Fool in the Rain [8/25/25]
· Reporting for Duty [2/24/25]
· Introduction [3/29/23] Normal.gif

[ More in Journal Section ]
  
 


 
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
  
 


 << SGTF Special Operations
Project A.P.E. 52 Geocoin
Geocaching Reference Number TB15PAP

Worth 20 Points (Create an account to enter TB tracking number and earn points!)

 
Project A.P.E. 52 Geocoin Tracking Bug ImageCurrent GOAL:
This Project A.P.E. coin does not physically circulate but photographic proof of its existence can be discovered at the Simian Guerrilla Task Force's Forbidden Zone (FBZ) A.P.E. 52 "Warlock Mine" Top Secret Geocache (TSG).

About this item:
Its true whereabouts are unknown, but most believe this highly coveted Project A.P.E. geocoin is stored under maximum security in an underground, fortified bullion depository east of SGTF headquarters.
  
   
     

Operatives who have logged this TB...

  •  DUCK432
    •  (Mon 09 Mar 2009 @ 16:54:25 GMT; 1236617665 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  CONDORMAN
    •  (Tue 10 Mar 2009 @ 20:01:28 GMT; 1236715288 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  LULU499
    •  (Wed 22 Jul 2009 @ 20:42:52 BST; 1248291772 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  TNE
    •  (Sun 26 Jul 2009 @ 14:41:12 BST; 1248615672 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  BRONCNUT
    •  (Sun 26 Jul 2009 @ 16:49:12 BST; 1248623352 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  THEJJDUO
    •  (Tue 05 Jan 2010 @ 17:29:58 GMT; 1262712598 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  MIKE6X6
    •  (Sat 08 May 2010 @ 19:48:20 BST; 1273344500 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  BLONDHILITES
    •  (Thu 05 May 2011 @ 9:55:35 BST; 1304585735 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  BKIP
    •  (Thu 05 May 2011 @ 19:25:41 BST; 1304619941 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  RAGFOOT
    •  (Mon 16 May 2011 @ 19:11:51 BST; 1305569511 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  FISNJACK
    •  (Mon 06 Jun 2011 @ 17:43:45 BST; 1307378625 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  DILLWEED
    •  (Mon 06 Jun 2011 @ 21:18:10 BST; 1307391490 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  R4LTONY
    •  (Sun 19 Feb 2012 @ 13:00:45 GMT; 1329656445 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  STANSD
    •  (Sat 03 Mar 2012 @ 21:26:42 GMT; 1330810002 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  ANON
    •  (Tue 14 Jan 2014 @ 21:09:07 GMT; 1389733747 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  OESTEADO
    •  (Tue 29 Sep 2015 @ 18:51:01 BST; 1443549061 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  HDAGENAIS
    •  (Tue 23 Jan 2018 @ 13:37:29 GMT; 1516714649 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)
  •  FLAGMAN
    •  (Thu 01 Jun 2023 @ 22:13:12 BST; 1685653992 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).