That’s why I love Cabin in the woods. They make it a creepy movie, but also make fun of all the common horror tropes by having the haunted grounds be a very orchestrated event.
“Oh no my cell phone doesn’t work” It’s because the creepy org turned on a cell phone jammer
“Why don’t they just leave?” The creepy org blows up a shit load of tnt to make the tunnel collapse
It’s for the lights in the truck bed. Mine has that as well