It looks like that, but well... somehow it does not look totally the same to me...
In the middle should be a map (but maybe I more remember the "meaning" instead of real picture - like when I get confused when it looks I got Leadership from shrines, but it was EXP instead)
Also I believe that the pyramid was somehow "yellow" even from inside... (but again, I always just run in, take the map and run out)
I will have to double check it... still it is hard to believe to have "GRAIL" in the middle...
Add: as you can see on this recently added picture of mine: the map looks similar - but in the middle is SCROLL instead of GRAIL
My explanation : Devs wanted hide a GRAIL in the Pyramid... made the screenshot... but then they changed their mind, and used SCROLL instead GRAIL - that is why we will never find this exact location in our game version
