It's from the original movie. Daniel was the one who realized that the two squiggles were stick figures and drew them with a sharpie.
It was a pyramid with the sun on top.
From the movie script:
Wait. Do you have a...um...sorry.
[He looks around, spotting a marker in Mitch's pocket and grabbing it.]
Hey, hey, hey, don't...!
[Daniel has already begun drawing his little stick figures on the actual monitor screen.]
Two figures on either side, praying beside a pyramid with the sun directly above it.
And now... for the REAL fun part!!! The actual prop coverstone in the movie did not have the kneeling figures!!! (it was a production mistake)