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On the west side of Twin Peaks near 7th avenue, there exists a watershed, which used to be one of San Francisco's major reservoirs.
This area has been through a lot over the years. Sewers flow underneath the deteriorating concrete bottom; Muni Metro trains run below the creek.
During this tour, you'll examine the secret backwoods of the watershed where no official trails go! You'll stumble upon some renegade trails that have been appearing, but for the most part, this area remains secret.
Learn about the tumultuous past of this area as you discover more about the undeniable link between nature and the growth of San Francisco.
Note: The hike length is about 5 miles, including some hills. Be prepared to visit sandy or muddy remote places, some not on any known map.
Hike Our Most Hidden Watershed
What to expect
- Hike the hidden backwoods of a watershed near Twin Peaks, San Francisco
- Learn of the sewers flowing underneath the concrete bottom and the Muni Metro trains running below the creek
- Hear about the history of the watershed as San Francisco's first major reservoir
- Appreciate the undeniable link between nature and the growth and proliferation of city life
About this Activity
Key Highlights
| Price | $25.00 per guest |
| Duration / Session | 3.5 hours |
| # Sessions | 1 |
Cancellation Policy
If you cancel more than 36 hours ahead, you can apply the full amount to a future ThinkWalk booking within 3 months, or get half refunded. Tours occur rain or shine.
