The Llanos de Moxos covers an area of 126,100 square kilometers (48,700 sq mi) in the lowlands of northern Bolivia, with small portions in neighboring Brazil and Peru.

Most of the Llanos de Moxos lies within the departments of El Beni, Cochabamba, La Paz, Pando, and Santa Cruz.

The Llanos de Moxos occupies the southwestern corner of the Amazon basin, and the region is crossed by numerous rivers that drain the eastern slope of the Andes Mountains.

The inhabitants constructed agricultural earthworks: raised fields, causeways, canals, and about 4700 forested mounds over a 50,000 square kilometer area.

[3] The people made decorated pottery, wove cotton cloth, and in some places buried their dead in large urns.