Introduction Since Hawaii State is located in the middle of the Pacific Plate, we will have to leave the Island of Maui to see a plate boundary feature. This part of the trip will be devoted to the geological features of California, US. First, we will visit the section of the San Andreas Fault that is located in San Luis Obispo County (see fig. 1). Then, we will move towards the fifth stop, Coso Volcanic Field that is located in Inyo County (see fig. 3). The Field is seismically active, which makes it an earthquake feature. We will not venture far and only get to the Red Hill Mountain (see fig. 2). Maricopa, CA can be regarded as the place where we can rest and eat (see fig. 1). San Andreas Fault, San Luis Obispo County The San Andreas Fault is situated on the boundary between the Pacific and North American plates. It is 1100 kilometers long (without taking into account the curves) and 20 million years old (Schulz & Wallace, 2013). As a result, it is a mass or a line of smaller faults rather than a single one (National Part Service, 2016). Apart from that, it is parallel with other major faults, for instance, the Hayward Fault. The San Andreas Fault is an example of a geological feature that appears as a result of transform fault boundary movement (Lutgens, Tarbuck, & Tasa, 2012). This kind of boundary is characterized by two plates sliding against each other horizontally, and a transform fault is a typical outcome of such movement. The result is the specific landscape: a “linear trough” with a similarly linear arrangement of features like valleys, “straight escarpments, and narrow ridges” (Schulz & Wallace, 2013, para. 4). This Fault is especially interesting since it is located on land instead of the ocean, which makes it easier to study (Lynch, 2013). Being a transform fault, the San Andreas Fault is not shaken by earthquakes as severely as convergent boundaries (Lynch, 2013). The movement of the plates has a speed of 3.5-5 centimeters per year, but occasionally the process hurries up, and earthquakes change the landscape of the feature (National Part Service, 2016). For example, in 1857, the 7.9-magnitude Fort Tejon earthquake took place in the Carrizo Plain, and the fault moved 9 meters (Schulz & Wallace, 2013). Similarly, in 1906, the great San Francisco Earthquake took place, with the biggest displacement amounting to 7.5 meters (National Part Service, 2016). Seismic activity is a natural consequence of the movement of plates that slip, break, scrape, and emit seismic waves. However, the Fault is in the state of a “seismic gap” right now: it has not been demonstrating significant seismic activity for several decades (Schulz & Wallace, 2013). The Fault is a great source of information on earthquakes, but it is also admittedly a great danger to the resources and lives of the people of California (Schulz & Wallace, 2013). Naturally, the processes related to the boundary movement have also created the landscape, which can be regarded as a tourist attraction (USGS, 2016b). Still, the Fault is of greater interest for researchers than entrepreneurs. However, the geological activity in the region has produced more economically attractive spots, and our next stop is