A tricky hide in one of the most visited places in San Francsico.
If you are a vistor to San Francisco, there is a good chance you have come up here to take a picture. After deciding exacly what angle you want for your photo you can come up the hill to this tree and see if you can get a smiley. (No need to climb the tree.) Given how busy this park can be, it might take a keen eye to spot the cache.