Feather Falls new Oroville, California, sound interesting.

Nestled in the foothills at about 2,500 feet, the falls plunge 640 feet, making them the fourth-highest in California and the sixth-highest in the lower 48 states.

Most Bay Area folks either hike locally or go straight to the Sierra, which, I presume, means lots of perfectly good trails in the foothills get ignored.