Question:  Ramona Falls is located in a forest along the trail that is part of the highest portion of which mountain ranges?
Sentence (from "Pacific Crest Trail"): The Pacific Crest Trail (commonly abbreviated as the PCT, and officially designated as the Pacific Crest National Scenic Trail) is a long-distance hiking and equestrian trail closely aligned with the highest portion of the Sierra Nevada and Cascade mountain ranges, which lie 100 to east of the U.S. Pacific coast.
Relevant evidence: Yes