420 Hippie Hill Golden Gate Park San Francisco

If it is your first April 20 in San Francisco, you could be surprised...

Every year, a large crowd gathers in the Golden Gate Park on Hippie Hill (near the tennis courts, where drums beats resonate almost every week end like some 420 rehearsals) for a big, collective smoke out.

It is not really legal. The police watch around. And there are even rules to follow to make it a peaceful event. Last year, there had been some arrests. You can read the events on CBS Local. The article on CBS Local.

Since early this morning, the crowd has been arriving as if heading to a gient picnic. Some people even carried a folding chair. 

You most probably heard athousant times the story of 420 gathering. We won't tell it once more. But here is a  video that gives a good vision.

And regarding the event itself, it has 2 main consequences for non-participating people... The traffic is just a nightmare all around the Park. Trust us. We have been stuck once! Take your bike, walk, roller blade, skate board, but forget about your car at least for the hour before and after 4:20pm. And you will think that the whole city is smoking considering the cannabis smell all over the neighborhoods surrounding the park. New very local exterior perfume!

We just hope everything will be fne.