signs posted at the entrance on one of the hiking trails, warning that it is closed to bikes and horses, purisima creek redwoods

access adventure allowed america area bay bikes california closed creek cruz footpath forbidden forest francisco hike hiking horses icon info information limited metal midpen midpeninsula mountains nature not only open outdoors park path post preserve protected protection public purisima recreation redwoods regional regulations rules san santa sign signage signpost space states symbol trail united usa walking warning woodland woods