 The city of Potonchán was located on the left bank of the Tabasco River, which was christened the Grijalva River by the Spaniards, and according to the chronicles of Bernal Diaz del Castillo, it was a league from the coast.The city was located on a small hill of sandstone, practically surrounded by water on three sides.On one side was, the river, and on the other two sides, swamps.