Bring clothing (sorry, nude hikes are a different Meetup group), 3 liters of water, hat, comfy shoes, snacks, all your troubles..., camera, etc
LEGAL STUFF: by going on this hike, you agree to assume all risks of hiking common in natural Los Angeles terrain, (such as wild animals, poison oak, rocky unstable footing and ticks), and that you will hold no one at Meetup, including the organizer, responsible for your safety. See the Meetup terms of service especially paragraphs 6.1, 6.2, and 6.3 https://help.meetup.com/hc/en-us/articles/360027447252-Terms-of-Service