Forbidden Zone Geocaches - Special Operations



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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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<< SGTF Special Operations

POTAM Fury
Geocaching Reference Number TB29NXG

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

	Current GOAL: Your TOP SECRET mission (codename FURY) is to further this Special Reconnaissance (SR) evidence through any means possible to help it reach its destination at 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 "long lost" 1999 promo card is an Archive P2 Inkworks promotional item. Per SGTF's AOR under "Operation Silverback," operatives to help forward this materials item to the GC210M6 cache for further exploration have been initiated.

Operatives who have logged this TB...

Honorable Discharge DUCK432

(Mon 09 Mar 2009 @ 17:03:53 GMT; 1236618233 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)

Honorable Discharge CONDORMAN

(Tue 10 Mar 2009 @ 19:55:47 GMT; 1236714947 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)

First Lieutenant TNE

(Sun 26 Jul 2009 @ 14:37:05 BST; 1248615425 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)

Chief Warrant Office BRONCNUT

(Sun 26 Jul 2009 @ 16:45:58 BST; 1248623158 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)

Honorable Discharge THEJJDUO

(Tue 10 Nov 2009 @ 13:46:16 GMT; 1257860776 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)

Honorable Discharge FLAGMAN

(Fri 02 Jun 2023 @ 11:36:49 BST; 1685702209 seconds since Unix Epoch (POSIX) 01 Jan 1970 00:00:00 UTC)

Honorable Discharge DICKANDALE

(Fri 14 Nov 2025 @ 14:05:18 GMT; 1763129118 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. Page Gen: 0.025 Seconds				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).