Monongahela, PA, United States
Mounds, The. Site of two Indian Burial Mounds built between 2,000 and 3,000 years ago by the Adena people. Late 19th century excavations found skeletons, pottery, copper implements, and other antiquities.
Listen to the audio guide for Blue plaque № 29793 Free on WIP — starts by itself when you arrive, even with the screen off