In Alma 39:3 we find that Corianton "did go over into the land of Siron among the borders of the Lamanites, after the harlot Isabel." According to the geographical theory of John Sorenson, the land of Siron would have been in the area around Macuspana, toward Palenque, where appropriately early cultural remains are likewise found. This place lies "over" hilly country into the next watershed from Teapa, the proposed site for the land of Antionum. [John L. Sorenson, An Ancient American Setting for the Book of Mormon, F.A.R.M.S., p. 251]
Alma 39:3 Siron (Illustration): John Sorenson's proposed site for Siron (the area around Macuspana, toward Palenque). Archaeological Map of Middle America: Land of the Feathered Serpent. Produced by the Cartographic Division, National Geographic Society, 1972.