The South Park Center for Seismic Activity is a small outpost located up on the local mountain around South Park, which turns out to be a volcano. The center was to check for seismic events, such as Mount Evanson erupting.
Stan, Kyle, Cartman, and Kenny go hunting with Stan's uncle Jimbo Kern. They hunt and kill many different animals, not far from the Center of Seismic Activity. During this trip, the illusive volcano's seismic events were recorded through transmissions at the Center, where Randy Marsh worked during "Volcano".
The Center for Seismic Activity is a plain, featureless building with no remarkable architectural qualities. The roof of the building features several antennae, including equipment used to measure and record seismic activity.
- "Volcano" - Randy was working here when he realized Mount Evanson was an active volcano about to erupt.
- "Grey Dawn" - Randy was captured by the AARP whilst working in the building.