A careful examination of the trilith complex at Ghayda al Seghir suggests that this point on the wadi terrace was used over a long period of time. The fireplaces appear to have been built up over time. 'Older fireplaces' can be seen to the south of the triliths and more recent fireplaces to the north. Other square structures and boulders with rock art may be contemporary. Based on dates from Taqa 60 in Dhofar, the entire complex could have been in operation for over 500 years. Trilith sites in western Mahra Governate may provide clues as to the trilith origins.The entire complex at Ghayda al Serghir which includes a village, springs, triliths, and a substantial amount of rock art, may have represented a important staging point for maritime incense distribution.