Landsat satellite images from the mid-1980s and early 1990s were used to map tropical forest extent and deforestation in approximately 800,000 km2 of Amazonian Bolivia. Forest cover extent, including tropical deciduous forest, totaled 472,000 km2 while the area of natural non-forest formation totaled 298,000 km2. The area deforested totaled 15,000 km2 in the middle 1980s and 28,800 km2 by the early 1900s. The rate of tropical deforestation in the > 1,000 mm y-1 precipitation forest zone of Bolivia was 2,200 km2 y-1 from 1985-1986 to 1992-1994. We document a spatially-concentrated 'deforestation zone' in Santa Cruz Department where > 60 percent of the Bolivian deforestation is occurring at an accelerating rate in areas of tropical deciduous dry forest.© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.