The 70 miles of California coastline that makes up the unincorporated area of Big Sur has a storied, almost mystical allure, largely thanks to its staggering beauty. With redwood forests, stunning Pacific views, winding rivers and natural hot springs, the area has for decades attracted celebrities, artists and millions of visitors. So many visitors in fact, that these days, Kirk Gafill, the president of the Big Sur Chamber of Commerce, estimates that 90 percent of the local economy is tourism-dependent.