misfired, and he nearly burned down the forest. After finishing the episode, Parker and Stone realized "Volcano" was about two minutes shorter than the time length required for the episode. In order to add time to the episode, Parker and Stone added the scene with Ned singing the song "Kumbaya" around the fire, as well as the long freeze-frame on a shocked Chef and Mayor McDaniels reacting to the news of the volcano's imminent eruption. In addition to Scuzzlebutt, "Volcano" included the first appearances of recurring characters Randy Marsh and Ned Gerblanski. In this first appearance, Randy is identified only as the South Park geologist, and it is only in the episode "An Elephant Makes Love to a Pig" that he is first introduced as Stan's father. Parker, who provides the voice of Randy Marsh, said the design, voice, and personality of the character are based on his real-life father, who works as a geologist for the United States Geological Survey. Parker said his father is very calm in real life, and Randy's relaxed reaction to learning of the volcano—calmly sipping his coffee—is "about how my dad would react to anything". The look of the Ned character was based on a drawing Parker made in high school, although the character did not originally have a voice box. The voice was inspired by a waitress who worked at a Kentucky Fried Chicken restaurant in Boulder, Colorado, where Parker and Stone would visit while attending the University of Colorado. The duo said they would go to the restaurant just to hear her voice, but that it was so low they would lose their appetite when she took their orders. Stone and Parker had trouble creating the right voice for the character; they tried putting the microphone directly on their throat, and also bought an actual voice box, but ultimately decided that the best way to provide the character's voice was with natural voice simulation. "Volcano" was released alongside five other episodes in a three-VHS set on May 5, 1998, marking the first time South Park was made available on video. The episode was released on the "Volume I" video along with "Cartman Gets an Anal Probe"; other featured episodes included "An Elephant Makes Love to a Pig", "Death", "Weight Gain 4000", and "Big Gay Al's Big Gay Boat Ride". "South Park: The Complete First Season", a DVD box set featuring all thirteen