San Andreas is full of CGI tsunamis and giant holes ripped open in the Earth but there are also a lot of practical effects used in the movie. Check out the video showing some of the old-school scenes shot. Yes, that’s The Rock really ripping a door off a hanging car and saving a girl from certain doom.
https://www.youtube.com/watch?v=FLm6Z4taV6w
Usually these films are 99 percent CGI so it’s cool to see them actually using some of the more old-school practical effects.