When a new geothermal heating system is installed under the high school they "thaw out" a Neanderthal ancestor of Jughead! When a new geothermal heating system is installed under the high school they "thaw out" a Neanderthal ancestor of Jughead! When a new geothermal heating system is installed under the high school they "thaw out" a Neanderthal ancestor of Jughead! When a new geothermal heating system is installed under the high school they "thaw out" a Neanderthal ancestor of Jughead!