Located along the 1 mile El Cariso Nature trail is an abandoned mine with an unsealed entrance. A favorite spot among hikers and an easy hike. Access to the El Cariso Trail head is behind the USFS visitors center on Ortega Highway. I have no information on this mine and nothing pops up on the usual sources not even USGS Topo. If you have any info on what was mined here or the layout of the mine please leave a comment below.