Searching for pit of Hell inllusion

Last year someone on this forum did a sort of pit of Hell illusion. It was made with sheets of clear plastic, great stuff foam, orange and red lights, and foggers underneath the plastic with vent holes. Ha I pretty much have a good idea on how to make the illusion but would like to see the how to video again for my haunt this year so I can do a good job building it. Any links would be very appreciated. Thanks everyone you guys are great.