Chestnut Hill

Ever wanted to know the science behind a GPS system? This Saturday, head to the Wissahickon Environmental Center for its geocaching workshop from 9 a.m to 12 p.m

Attendees will learn the basics of geocaching in the program. They will also have the opportunity to utilize a basic GPS in the high-tech treasure hungting game.

The event costs $10 per family. For more information, call (215) 685-9285.

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