This 4-hour trip through San Francisco's lost sand dunes, ponds, creeks and coastline will focus on the city south of downtown and SOMA, traversing the Mission, Mission Bay, Potrero Hill, Bayview, and the southeast coastline, including several new public parks. A sliding scale donation of $15-50 is requested to benefit Shaping SF, but pay what you can/will. Info: 415-608-9035
