The temple of Preah Vihear was located in a disputed border region between Cambodia and Thailand. Treaties from 1904-1907 established the border along a watershed line, placing the temple in Thailand, but later French maps instead placed it within Cambodia without Thailand noticing. In 1959, Cambodia brought the case before the ICJ, which ruled in 1962 that Cambodia had sovereignty over the temple based on the concept of acquiescence - Thailand's failure to protest the maps despite a duty to inspect them implied consent to the boundary shown. The court also cited the concept of preclusion, as Cambodia had long possessed the temple adverse to Thailand's claim.