Alum Rock Park Butterfly Habitat Restoration Tour, 5/12/18 by Ronald Horii
I went to this event at Alum Rock Park, organized by the Committee for Green Foothills:
"Join us on a 3-mile moderate hike in the Alum Rock hills to visit checkerspot and monarch butterfly restoration sites. Stephen Rosenthal, past California National Plant Society Santa Clara Valley President, will show us the restoration sites and talk about his volunteer work restoring Alum Rock’s native habitat."

Event information:
https://www.greenfoothills.org/event/visit-butterfly-restoration-sites-alum-rock-park/

Committee for Green Foothills:
https://www.greenfoothills.org/
https://www.facebook.com/greenfoothills

Alum Rock Park information:
http://www.sanjoseca.gov/?nid=2819

Map of Alum Rock Park: https://sanjoseca.gov/DocumentCenter/View/58012

California Native Plant Society, Silicon Valley Chapter: http://www.cnps-scv.org/

Stephen Rosenthal is also a docent for the Santa Clara Valley Open Space Authority, which partners with the San Jose in Alum Rock and other parks. He helped to lead a hike on the South Rim of the park last year: https://www.facebook.com/media/set/?set=a.1607042222652627.1073742278.100000405933924&type=1&l=b34856fa33 
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