There are a lot of Mario and Zelda links. Remember the picture of Mario and Co. in Zelda. There is also that statue from SM64. classicgaming.com says: "Strange Sign Copying
A seemingly harmless hint sign in Goron's Cave has something strange about it. First of all, it's not like the other signs, in that it's written on a stone tablet. Now if you zoom in close to this sign you can read something along the lines of "L is real star", only it's very blurry. There is more text underneath, but it is too small and blurry to make out easily. This EXACT sign texture appeared in flagship title Super Mario 64, underneath the star statue in Peach's garden. A strange link indeed."
I saw a picture of it once, but can't find it now.