Wulhumarri and its surrounds are part of a network of mythological places along the Fortescue River that are important to the Yindjibarndi traditional custodians.
Wulhumarri (or Gregory Gorge) is set along the Fortescue River, and surrounded by other culturally significant places for Yindjibarndi people. A long deep canyon of volcanic rock, the gorge was created by the warlu (serpent) during the Dreaming, when it brought the Law from the coast all the way inland to the tablelands of Yindjibarndi country. The gorge holds permanent water and has always been important for Yindjibarndi people travelling through here to and from the coast. Several permanent pools can be found in the area, as well as all along the Fortescue River. These are said to have been made by the warlu popping his head up as he made his way inland. Paperbarks and palm trees are scattered throughout the area and combine with the water sources to create an enticing haven.
Within Wulhumarri there are two concentrations of rock art with both paintings and engravings. Having both in one place is a rare occurrence in the Pilbara. The engravings at Wulhumarri have an unusually high number of human figures with up to 150 individuals depicted at one site. The engraving technique used at this site is called percussion engraving and involves using a hand-held sharp rock to create fine details. The paintings at the site depict emu feet and marked lines.