At the foot of the Ortega Mountains on the flank of Cleveland National Forest, the 3,300-acre Lake Elsinore is one of Southern California's more spectacular natural wonders. It is also the region's only large natural lake. The city of the same name on its shores was incorporated in 1888 through the efforts of financier Franklin H. Heald. His partner, D. M. Graham, fancifully wrote, "We can imagine no more enchanting picture than Elsinore will present...