New before and after pictures from the epicentre of the July 5 earthquake in California's Mojave Desert show the raw power of the geological event.

The 7.1-magnitude quake left a crack in the earth that's visible from space.

Quake crack

Planet Labs, a privately-owned U.S.-based Earth imaging company, shared satellite images of an area north of Ridgecrest, Cali. The rupture left in the surface where the quake hit is easily seen.

The Planet Labs images also show a new darker line to the left of the epicentre, which its CEO Will Marshall said on Twitter was evidence of dewatering. That's when water and sediment spurt up from the ground because of shaking caused by an earthquake.

That 7.1-magnitude event on July 5 followed a 6.4-magnitude foreshock just a day before. They were Southern California’s biggest earthquakes in 20 years.

They're not isolated events.

Seismologists have recorded more than 8,000 earthquakes in California and Nevada in the last week.

There have been so many, the United States Geological Survey (USGS) shared an animated map tracking activity from July 4 to July 8.

The USGS said the aftershocks will likely taper off, and the probability of another big quake will decrease.