Peninsula, in the so-called Tierra Llana ("Flatland") of the province of Huelva. On the north it is bounded by the Río Tinto, the municipalities of Huelva, Niebla and San Juan del Puerto; on the south by the Atlantic Ocean and Palos de la Frontera; on the west by the Río Tinto and Palos de la Frontera; and on the east by Almonte and Lucena del Puerto. The urban centre of Moguer is located at 37° 16′ N, 6° 50′ W, at an altitude of , from the provincial capital Huelva, and from the Andalusian capital Seville. It is very close to Palos de la Frontera, and from the beaches of Mazagón; all of these are within the mancomunidad Moguer-Palos de la Frontera and the larger Comarca Metropolitana de Huelva. Its surface area is . Road access The main access to Moguer is from the north by means of the Autovía A-49/E-1 by way of the autonomic route. It can also be reached by the national N-422 and the provincial from Palos de la Frontera, the autonomic A-494 from the municipality of Almonte, and the autonomic A-486 from Lucena del Puerto. The urban centre of Moguer is accessed from the A-494 by the avenues Hermanos Niño, Quinto Centenario, de la Virgen, and de América and from the Carretera de la Marisma by the Calle de la Ribera. The urban centre of Mazagón is accessed from the A-494 by the Avenida de los Conquistadores (west), and the Calle El Dorado, Avenida del Arroyo de la Miel, and Avenida de los Conquistadores (east). Terrain Moguer is located in sandy clay Pliocene–Quaternary land. It can be divided into three regions: countryside, wetlands or marsh, and coast. The Río Tinto and its marsh make up the predominant landscape of the northern part of the municipality. On the south are of virgin beaches and the sand hills and gullies of the Arenas Gordas. The rest of the territory is the countryside, cut by the streams Galarín and Montemayor, tributaries of the Río Tinto; other streams are the Arroyo de Angorrilla, Arroyo de la Monjas, Cañada del Peral and Arroys de la Grulla in the Domingo Rubio estuary, and the Arroyo de las Madres in the Las Madres lagoon. In some places, lower strata have worn away, leaving curved outcroppings known as cabezos (from the Spanish cabeza, head). Climate Being located near the coast of the province