The first cultures of South America developed in the Andean region along the western edge of the continent. This region includes a variety of climates and terrains. The narrow coastal plain is a dry, lifeless desert crossed by occasional rivers. Further inland, the snow-capped Andes Mountains rise steeply, leveling off into high plateaus that bake by day and freeze at night. East of the Andes, dense jungles stretch from Peru into Brazil.
The interior of the temple complex at Chavín de Huántar included relief carvings of human, serpent, crocodile, feline, and bird images. Scholars believe that Chavín religious beliefs unified the surrounding region.
Thousands of years ago, people settled in fishing villages along the desert coast of Peru and Chile. Gradually they expanded inland, farming the river valleys that run up into the highland plateaus. Using careful irrigation, they grew maize, cotton, squash, and beans. On mountain slopes, they cultivated potatoes, eventually producing 700 varieties. On high plateaus, they domesticated the llama and the alpaca. Eventually, they built large ceremonial centers and developed skills in pottery and weaving.
Archaeologists have pieced together a chronology of various cultures that left their mark on the Andean region over the course of 2,000 years. The earliest of these was the Chavín (chah VEEN) culture, named for ruins at Chavín de Huantar (chah VEEN day WAHN tahr). There, in about 900 B.C., people built a huge temple complex. Archaeologists are not sure of the Chavín political structure, but they think the culture's religion unified people throughout northern and central Peru. Chavín arts and religion continued to influence later peoples of Peru as well.