SANTIAGO - A Belgian woman was in serious condition with burns over much of her body Friday after falling into a geyser in northern Chile, local officials said. The unidentified woman, who was with her husband, backed into the geyser on Thursday while trying to take a picture, local police said. “She has extreme burns over 80 percent of her body and her life is at risk,” said Darwin Acuna, a doctor at a Santiago hospital where the woman was taken for treatment.