The Santa Lucia Mountains (sæntə luˈsiːə) or Santa Lucia Range is a rugged mountain range in coastal central California, running from Carmel southeast for to the Cuyama River in San Luis Obispo County. The range is never more than from the coast. The range forms the steepest coastal slope in the contiguous United States. Cone Peak at tall and three miles (5 km) from the coast, is the highest peak in proximity to the ocean in the lower 48 United States. The range was a barrier to exploring the coast of central California for early Spanish explorers. Geography The Santa Lucia Mountains are part of the Outer South California Coast Ranges, in the Pacific Coast Ranges System. The coastal side of the range rises directly from the shoreline, with oceanfront ridges rising directly to the crest of the coastal range. The crest of the range is never more than from the coast. Cone Peak is the steepest coastal elevation in the contiguous United States, rising nearly a mile (1,609 m) above sea level, only three miles (5 km) from the Pacific Ocean. The range's northern section runs parallel to the southern section of the Diablo Range, part of the Inner South Coast Ranges, which lies to the east across the Salinas Valley. The range's highest summit is Junipero Serra Peak, in Monterey County and the Los Padres National Forest. Major peaks Junipero Serra Peak, . Cone Peak, . Ventana Double Cone, . Mount Carmel, . History and toponymy The first European to document the Santa Lucias was Juan Rodríguez Cabrillo in 1542 while sailing northward along the coast on a Spanish naval expedition. Cabrillo originally named the southern portion of the range the Sierras de San Martín, as he was passing the area on November 11, the feast day for Saint Martin. He named the northern part Sierras Nevadas because there was snow on it. The present name for the range was documented in 1602 by Sebastián Vizcaíno, who had been tasked by the Spanish to complete a detailed chart of the coast. Passing by the range around December 14, he named the range Sierra de Santa Lucia in honor of Saint Lucy of Syracuse, for whom many Christians celebrate a feast day on December 13. The first European land exploration of Alta California, the Spanish Portolá expedition, camped on the coast near Ragged Point in present-day San Luis Obispo