Fall is in air and the foliage is nearing peak color. Join the park naturalist for a 12.2-mile bike ride on the John C. Oliver Multi-purpose Trail to learn why leaves turn the color they do. Please bring water and your own bike if you have one. Registration is required; please call the office at (724) 253-4833 or email megmcdowel@pa.gov. At registration, please let park staff know if you need to borrow a park bike, as park bikes are limited.