Led Zeppelin IV (Led Zeppelin) Easter Eggs

1) Open the cover. Inside is a picture of an old man standing on a hill overlooking a village.
2) Place the inside picture against the mirror with the old man's back toward the mirror.
3) The old man (and his reflection) are the horns of the demon.

This... more

Inside cover of album; from bottom, center, go up 4 inches, three rocks together form "LED"... Then from the inside fold, center, down 4 inches, right 2 inches four rocks together form "ZEPP"....