Using radiotelemetric methods, body temperature was studied in the black-headed rock python, Aspidites melanocephalus under field conditions in northern Queensland, Australia. When termite nests were present, A. melanocephalus entered these subterranean environments which are characterized by stable temperature conditions. However, when termite nests were not available, the blackheaded rock python utilized direct sunlight for heating and behavioral adaptations such as posture type to maintain desired temperatures and prevent cooling.