Just inside the Presidio. If driving through the Richmond, take 14th Avenue, then turn left on Wedemeyer and parking lot with be on the left. 

Hashoween! Wear a costume! Bring a headlamp as a trail will pass decorated houses and venture through spooky places. Special Halloween Drink! Orange food galore! Hashoween candy, including year-old Milk Duds that will pull the fillings from your teeth. Don't miss! Prizes for best costume! Rewards for vulgar or poor-taste costumes. Popular sweaty costume exchange!