As frugal, outdoorsy newlyweds in the 1960s, Jack and Laura Dangermond spent their honeymoon camping along California's iconic Central Coast before heading inland to Yosemite. The two grew especially fond of a stretch of coastline west of Santa Barbara, with sweeping vistas of the Pacific Ocean. Now the Dangermonds are donating $165 million to ensure that one of the last pristine stretches of California's coast that remains in private hands, just up the road from where they camped, is preserved forever. The gift to The Nature Conservancy is the largest the organization has ever received and was earmarked for the purchase the 25,000-acre Bixby Ranch, which straddles Point Conception in Santa Barbara County. The donation by the Dangermonds, the billionaire founders of Esri, the privately-held software company that essentially invented the digital map, is also the ninth largest philanthropic gift of 2017, according to a database compiled by the Chronicle of Philanthropy. The ranch has been privately owned and was once considered for development. It includes 8 miles of coastline, windswept bluffs and hillsides and valleys rich with California live oaks. It is home to 39 threatened or special status" species, including 14 that are considered endangered, as well as Chumash artifacts and dozens [of] National Historic Register sites. Sitting at the intersection of Northern and Southern California, its habitat has elements of both regions. "That's a pretty rare thing in California," Dangermond says.