19km/12mi north-west of El Tajín lies the industrial town of Pozo Rica (60 m (197 ft); population 224,000), 15km/9.3mi north of which in the direction of Tihuatián a road branches off to Teayo (Huastec: "in the stone tortoise"; a further 22km/13.6mi). The main plaza of the village is dominated by the excellently restored Castillo de Teayo Pyramid
, a triple-tiered structure almost 13 m (43 ft) high, on the upper terrace of which are the remains of a rectangular temple. Stone carvings discovered near by, mainly of Aztec origin, can be seen displayed in a small museum. Similar sculptures are found in the vicinity of Zapotitlán and La Cruz. Until recently archaeologists assumed that the pyramid was constructed by the Aztecs in the 15th c., serving as their base in the Totonac region. Now it is thought to have been erected at least four centuries earlier, probably by Toltenacs from Tula. Tunnelling work is planned which is expected to reveal a Huastec core. The countryside around the pyramid was not generally settled until 1870. The villagers used materials from part of the Old Indian structure to build their homes.