Take a look at WUE schools (western publics that discount tuition for CA applicants)
here’s the full list.
https://www.wiche.edu/tuition-savings/wue/wue-savings-finder/
If you are looking for a metro area near mountains, UNR and Boise State will fit the bill. NAU and CO State also get a lot of CA students.
If you want more of a resort/college town Ft Lewis College in Durango Colorado is a must visit - 3500 students, beautiful campus with 360 degree views, small GE classes, easy access to professors - a private school experience on a public school budget. My son LOVES it there.