There are no active volcanoes in Rocklin, California, or anywhere else in the state. California does have several volcanoes, but they are all located in the eastern part of the state, primarily in the Sierra Nevada and Cascade Ranges.

Here's why:

* Plate tectonics: California sits on the edge of the Pacific Plate, where it meets the North American Plate. This boundary is known for earthquakes and volcanic activity. However, the area around Rocklin is not directly on a plate boundary.

* Volcanic history: While there have been volcanic eruptions in California's past, the last major eruption was in the Lassen Volcanic National Park, which is hundreds of miles north of Rocklin.

So, rest assured, you don't have to worry about volcanic eruptions in Rocklin!