This sound effect was created for a cracking tombstone prop in the front cemetary of a haunt. The mix was designed for a non-traditional L/R use. The left channel was placed below the ground plane by the tombstone while the right channel was placed inside a 2nd story window inside the haunt behind the cemetary. The thunder was heard in the elevated channel with some LFE in the ground channel. As the tombstone cracked apart, the ground channel emitted a groaning, cracking sound and a burst of fog was released from behind the tombstone. A ghastly voice was heard panning from the ground up to the 2nd story window. The ground to elevation panning of the sound effect followed the fog burst that acted as a momentary projection screen with an image of a ghost appearing dimensionally within the fog. The actual 3d prop that was filmed for the projection was then briefly illuminated in the 2nd story window as visitors eyes followed the fog cloud and sound source.
Here is the video that was dimensionally projected into the fog burst. The prop placed in the 2nd story window was lit the same light and blown by the same fan as seen in the video. Creature design by Kyle @ Midnight Studios FX.
If you're interested, here are the schematic plans for this prop and installation.