Presidio Quest Adventures are treasure hunts that allow kids and families to explore the park's special natural areas. Meet at Crissy Field where a guide will orient you, provide Quest booklets, and start you on a self-guided adventure. The journey of discovery traces a hidden creek that travels from the waterfront to El Polin Spring. RSVP for exact meeting location to acahlan@presidiotrust.gov or (415) 561-2730.