Recently reopened California park, overwhelmed by crowds, closes again Published on May 26, 2020 at 06:26AM by Katie Dowd A popular trail to a waterfall in Altadena had to close over the weekend due to overwhelming Memorial Day crowds. Eaton Canyon, a favorite among day hikers in Los Angeles County, was overtaken by visitors failing to keep their physical distance from others and neglecting to wear masks. As a result, the L.A. County Department of Parks and Recreation shut the entire area on Sunday and Monday.