at the site, a number of specialists not dedicated to food production, and political, religious, economic, and/or military relations with other sites within its area of influence." Unfortunately, few, if any, of the residential structures surrounding the large centers of the city have survived. The main part of the site is a complex of clay constructions stretched out for in a north-south direction, although the site is oriented 8° west of north. The urbanized zone may have covered an area as large of 2 km2. This particular site layout is the way the city was from 600 – 400 BCE, which is when the final Olmec occupation occurred. This site is particularly fascinating because of its layout—not only does Complex A face within 8 degrees of true North, but the east and west sides of the site are almost identical, showing bilateral symmetry. This is perhaps related to religion (it’s fairly speculative, at this point) but it certainly shows a high level of sophistication and city-planning. Unlike later Maya or Aztec cities, La Venta was built from earth and clay—there was little locally abundant stone for the construction. Large basalt stones were brought in from the Tuxtla Mountains, but these were used nearly exclusively for monuments including the colossal heads, the "altars" (actually thrones), and various stelae. For example, the basalt columns that surround Complex A were quarried from Punta Roca Partida, on the Gulf coast north of the San Andres Tuxtla volcano. "Little more than half of the ancient city survived modern disturbances enough to map accurately." Today, the entire southern end of the site is covered by a petroleum refinery and has been largely demolished, making excavations difficult or impossible. Many of the site's monuments are now on display in the archaeological museum and park in the city of Villahermosa, Tabasco. Major features of La Venta La Venta was a civic and ceremonial center. While it may have included as-yet-undiscovered regal residences, habitation for the non-regal elite and the commoners were located at outlying sites such as San Andrés. Instead of dwellings, La Venta is dominated by a restricted sacred area (Complex A), the Great Pyramid (Complex C), and the large plaza to their south. As a ceremonial center, La Venta contains an elaborate series of buried offerings and tombs, as well as monumental sculptures. These stone monuments, stelae, and "altars" were carefully distributed amongst the mounds and