This makes me think of the ''alien code'' we can see repeating itself all around the map, UFO camp site, on some water container etc... It is located right next to fort Zancudo. Not sure if it is linked, or what to do with it.
Also, I want to know more about this.
''Give thanks, praise him'' A cave with a fire burning all the time, unattended.
What do we know about this, and does someone can link this with anything else?
There's an eye on the wall, but this eye is Yellow. The one on top of Mount chilliad is Red. Maybe some glyph are related to this eye?
The "Alien Code" as you call it is based off Alien aplhabet(the styling,iirc) From what i remember, 2 circles with a line connecting them both in the middle means "Opposing? or "Opposing forces"
This doesn't mean it has to mean this in GTA but, it's something i remember from when i was into Aliens and stuff.
The "Give Thanks" and "Praise Him", IMHO, are telling you to do Yoga on Mt.Gordo at a certain time.(no, there is no HARD evidence pointing in this direction, just subtle hints)
There is a Yoga pose called "Praise the Sun" and Yoga seems to be something they could have taken out of the game but, left it in for some non-apparent reason(They left Yoga in but, no Jetpack? see how silly that sounds?)
Also, for Yoga being something that nobody cares about and something non-relevant to the game, they sure did want you doing it on Mt.Gordo with Chiliad in the background.(maybe because they are great camera views that showoff their hard work OR maybe not, just seems wierd it highlights Chiliad while doing the Yoga)