Geology Garden, University of Pennsylvania

This garden features ten boulders from southeastern Pennsylvania and southern New Jersey. The age of the boulders ranges from one billion to 25,000 years. The youngest boulders are nearer to Smith Walk, and they become progressively older towards 33th Street. Also planted in the garden are four living floras, which represent vegetation that existed 7, 25, 45 and 200 million years ago.