Forbidden Zone Geocaches - Stone of the Lost Valley Surveillance Images



		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



		Login

	Nickname Password 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

Surveillance Images > FBZ A.P.E. 51

FBZ A.P.E. 51

294 viewsValley Rain Clouds

The Gates to Tartarus?-54 viewsRusty Gates

315 viewsThe Lost Valley

263 viewsTurtle Rock

252 viewsFBZ A.P.E. 51

226 viewsThe Sacred Stone

236 viewsShaman Burial Spot

206 viewsMy 2 nephews having a blast!

214 viewsUs at the trailhead.

205 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.

247 viewsEntire FBZ zone

185 views

61 pictures on 6 page(s)

coppermine ©


	*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: 0.023 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).