Mount Murder is a an amusement park built in the center of Dougal county by Dan Halen Sheet Rock international. Its foundation was built using the mud surrounding the Cuyler home (which Early gave accidentally), and it's decorated with the skulls of the worker who built it.
The idea came to Halen after hearing a voice in his head explaining to Halen that "it was time". Dan Halen then proceeded to get permission from the Dougal county city council by playing on their gullibility. Dan Halen had built large amounts of hype on Mount Murder however the very day it was finished, a new larger park named Homicide Hill led all the residents away. After several failed attempts by Dan Halen to attract the residents to Mount Murder, he deemed it a failure.