Vinod Khosla bought the land abutting a popular surfing cove. Then he boxed the surfers out. The craziest thing? He might get away with it.

Early on the morning of October 21, 2012, five surfers pile into a Chevy Suburban in Half Moon Bay and drive south on Highway 1. Just past the city limits, they pull off the road at the entrance to Martins Beach, a beautiful little cove frequented by generations of fishermen, beachgoers, and surfers. It’s a typical coastal morning: damp, chilly, the sky a latticework of fast-moving clouds. They shrug off their hoodies and suit up.

From the highway a single road—the only way in or out—tumbles toward the beach past hay fields, weathered bungalows, and stands of wind-sculpted cypress. The road, which runs over private property, was open to the general public for almost a century. But an automatic metal gate installed by the property’s new owner now bars the way. Signs hang from the gate: “Beach Closed, Keep Out” and “No Trespassing.”