Located in the far northwest of the municipality of Cárdenas 93 km from the municipal seat, the full name of the town is Coronel Andrés Sánchez Magallanes. It has an altitude of ten meters above
sea level. The town is one of the municipality's 25 "regional centers of social and economic development." The patron saint is honored from the 24th to 26 July with religious activities as well as sporting and cultural events, a beauty pageant and exhibition of regional products. An Oyster Fair is held in conjunction with the other festivities. According to scattered archeological evidence, the area was occupied at least as far back as the
Mayan era. According to
Bernal Díaz del Castillo,
Juan de Grijalva, and
Hernán Cortés passed an indigenous settlement here, then called Ayagualulco or Agualulco. Sometime after Spanish domination, the town became known as Barra de Santa Ana. According to oral tradition, there are two reasons why the Spanish community was called Barra de Santa Anna. The first states that during the 19th century, a devout woman from the
city of Campeche donated a statue of Saint Anne to the community. The second states that a shipwrecked man on the point of drowning here pleaded to the saint to save him and by miracle he survived. He then donated an image of Saint Anne to the fishermen who saved him. The current name was declared in 1909 by state Governor
Abraham Bandala in honor of Coronel Andrés Sánchez Magallanes, who fought against the French in the 19th century. The community was declared a town and port in 1964 by Governor
Carlos Alberto Madrazo Becerra. ==Geography and environment==