Harvey Bear County Park Mapping Party and Hike

What's a mapping party? (http://wiki.openstreetmap.org/wiki/Gilroy_Mapping_Party) GPS units available for loan, along with instruction in how to use them before the hike. Post hike meeting for uploading, downloading, tutoring for newcomers or just socializing at 1st Street Coffee (http://www.firststreetcoffee.com/) in Gilroy. Hike and car pool details here (http://lomaprieta.sierraclub.org/calendar?requestedActivity=28338).