Chapter 5 inquires how the rainforests of Ecuador turned into a profoundly contaminated landscape between the 1970s and 1990s. Recurrent oil spills, discharges of toxic water into rivers, the burning of crude oil and of natural gas, and the use of simple earthen waste pits all contributed to a toxic metamorphosis of the Amazon region. An analysis of Texaco’s internal communication about environmental contamination from 1972 to 1980 gives insights into the intentionality of the company’s handling of hazardous waste. The toxic metamorphosis was the result of practices of externalization in the production and disposal of hazardous waste in the Ecuadorean oil industry. This chapter develops the concept of the toxic ghost acre as a mechanism of the externalization of costs onto the environment and the public health of local populations. The notion of toxic ghost acreage is useful to uncover the transnational and socio-ecological dynamics that turned the Amazon into a cheap sink for hazardous waste. The chapter ends by shedding light on the perpetuation of the toxic ghost acres in Ecuador through Texaco’s insufficient remediation programs in the 1990s.