"A little more than twenty miles southeast of San Diego, within the boundaries of the Mexican land grant Rancho Jamul, a curious and substantial masonry structure stands isolated at the foot of a low hill. The structure houses two octagonal kilns, a brick smokestack rising more than thirty feet above them. Limestone and clay from a deposit on the hill behind were once burned in these kilns by the Jamul Portland Cement Manufacturing Company, an enterprise created during the boom of the 1880s." -San Diego Historical Society
So someone has been going around the interwebs and spamming other trip reports and post about this hike (including mine), going on about how its private property and we are trespassing. So consider this a preemptive post in case they show up here. Such allegations are false. This is a completely legit hike on public land in an ecological reserve. This link should clarify things: http://www.dfg.ca.gov/lands/er/region5/ranchojamul/
