Simplify the following text for a Grade 9 native English-speaking person.
Original: The Bradshaw Trail , nicknamed the Gold Road at one time , is an historic overland stage route in Southern California which originally connected San Bernardino , California to gold fields in La Paz , Arizona , some miles north of Ehrenberg .
Simplified: This road used to connect San Bernardino , California to gold fields in La Paz , Arizona , known today as Ehrenberg .