The central portion of the Baja Peninsula is occupied by one of the most dramatic desert landscapes in North America. The Desierto Central stretches for several hundred kilometres between Ensenada and La Paz, a landscape of volcanic rock, dry valleys, and vast plains dominated by the towering cardón cactus — the largest cactus species on earth.
Driving the Transpeninsular Highway through this landscape is a genuinely striking experience. The highway is lonely by any standard — settlements are small and widely spaced — but the desert itself rewards attention. The endemic flora includes dozens of cactus species found nowhere else: the boojum tree (cirio), which grows only on Baja and a tiny area of Sonora, is the strangest, a tapered column that can lean at extreme angles without falling. The Sierra de San Francisco in the central desert contains prehistoric rock paintings, designated a UNESCO World Heritage Site, reachable from the town of San Ignacio.