BEST Starved Rock Waterfalls 1. LaSalle Canyon To get to this Starved Rock waterfall, you’ll embark on a 2.6-mile trek, taking the River Trail from Parkman’s Plain to reach LaSalle Canyon.

“Castle Rock is a very unique geological area,” he said. “We get used to the redwood trees of Big Basin, Portola and Henry Cowell. Then, you get up to Castle Rock, and it’s rugged.