Welcome to the IslandCache Program! This activity will guide you to some of the park’s significant cultural, historical and natural resources. Using your own Global Positioning System (GPS) unit and clues provided by the IslandCache Site Sheets, you can guide yourself to one or all of the sites. To make your visit a memorable—and educational—experience, please read the guidelines and suggestions below.
Please note that geocaching with traditional physical caches is not permitted in the park.
What You Need to Participate
How the IslandCache Program Works
Things to Know about IslandCaching
IslandCache Site Sheets
» Site 1: Introduction to Boston Harbor Islands (PDF - 142kb)
» Site 2: The Nucleus of Maritime Trade (PDF - 92kb)
» Site 3: Reconnection and Renewal (PDF - 476kb)
» Site 4: Native Americans on the Islands (PDF - 229kb)
» Site 5: Harbor Defense (PDF - 122kb)
» Site 6: The Outer Islands (PDF - 488kb)
» Site 7: Tidepools, Flora and Fauna (PDF - 375kb)
Did You Know?
Shag Rocks in Boston Harbor Islands National Recreation Area offers roosting sites for cormorants and other seabirds that fish the surrounding waters. Better known in Britain as “shags,” cormorants gave this rocky outcropping its name. More...