Quaking Aspen: Bryce Canyon National Park www.nps.gov Pando may be older at 80,000 years www.nps.gov a lot of quaking aspen National Park Service https://www.nps.gov/brca/learn/nature/quakingaspen.htm https://www.nps.gov/brca/learn/nature/quakingaspen.htm National Park Service - Quaking Aspen