An example of a community linked by party line is in Big Santa Anita Canyon high in the mountains above Los Angeles, near Sierra Madre, California, where 81 cabins, a group camp and a pack station all communicate by magneto-type crank phones. One ring is for the pack station, two rings for the camp and three rings means all cabins pick up. There are also eight emergency phone stations along the hiking trail. The system is a single wire using the ground as a return path. In 2018 maintenance of the line was assumed by the association of cabin owners.