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Kids playing outdoors

Family Adventure Treks

Brown Elfin

The Butterflies of San Bruno Mountain!

Sunday, April 6th | 11:00 am - 1:30 pm | San Bruno Mountain Park

Tree Frog Treks is honored to partner with lepidopterist Liam O'Brien, winner of Bay Nature's Local Hero Award for Environmental Education! Liam will lead us on a family-friendly walk on San Bruno Mountain, where we'll be looking for all kinds of butterflies, including the endangered San Bruno Elfin and the Mission Blue! You'll be amazed by how much there is to learn about our beautiful butterfly friends!

For adventurers age 6 and up. | Children under age 13 must be accompanied by a paying adult | $10 per person

Online registration will close at midnight on April 5th, but feel free to meet us at San Bruno Mountain if you decide to drop-in! Please email Tony at tony@treefrogtreks.com if you have any questions or concerns!


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General Refund Policy
Our refund policy is as follows:

  • 14+ days notice: Program fee refunded less 10% administration fee
  • 8-14 days notice: Program fee refunded less 50% administration fee
  • 7 or less days notice: Program fee is nonrefundable