Mammoth Lakes saw nearly 600 earthquakes in 24 hours last week – the worst swarm of tremors in nearly a decade.
Monitors show a concentration of seismic activity in the region which has sent shockwaves through the the California town.
Starting just before 5am on Thursday they have ranged between 1.0 and 3.8 in magnitude.
At least 109 of the earthquakes were magnitude 2.0 or greater, and at least six, however, were greater than magnitude 3.0.
A member of the U.S. Geological Survey told the LA Times that it is the worst spell seen in California’s Eastern Sierra in at least 10 years.
Researcher David Shelly said that they now be tracking the area – one of the most seismically active in the country – closely.
Even though they have sent ripples through the community, residents say they are used to it as there are constantly small shocks.
There are 17 volcanoes in the region, however most of them are dormant, while there are a countless number of fault lines across the Long Valley Caldera – a 20-mile depression next to Mammoth Mountain.