Idea one ( more likely)
So we start with the all seeing eye on top of mount chiliad-
This has six lines at the top and 3 at the bottom its the middle bottom that you need to follow in a straight line but I pin pointed two positions as it is quite hard be exact .
Here is one of two this one is the more likely one as it links to the hippie camp which do all these drawings.
which takes you to the water tower in the hippie camp, which also has a seeing eye on it ,and on this straight path from the all seeing eye on chiliad you come across this
Which looks a lot like a water tower with a all seeing eye on it .
This is the view you get from that water tower with the mural over laid on the the mountain tip
This is only put on roughly , move and shape abit the light on the mountain smacks in the middle of the eye at night, I belive on the left hand side the two boxes are drawings with clues e.g( rain) (night) , you see the ufo and on the right hand side is three empty boxes find the paintings around there for clues how to get the jetpack or what ever it may be put the three clues together e.g (place time weather) what ever it may be and then you will find it .
This is the other place I pin pointed its either facing one of these two number one is more likely .
Its the farest point you can get , on a little island strangely straight inline with the doc (where you get the secret message )
This is the view of the mountain from there
The same thing happens at this one in the night the eye is filled with the light of the mountain , this was just chucked on there like that
Anyway these are the two places I could pin point a straight line from I do belive this is how the mural is supposed to go some way over the mountain in the boxes you find paintings ( clues)
have ago at trying to pin point the direction from the eye your self try and see if you can find anything on either of the pictures boxes and post it if you do.
if any one wants the mural outline I will post it and all you have to do is do a transparent copy and paste it on to any of your images .cheers .