Ancient rock art at Murujuga, or the Burrup Peninsula, in Western Australia, has seen much larger damaged than previously anticipated due to industrial pollutants found in air emissions.

About 932 miles north of Perth, Murujuga contains one of the world’s most significant and dense collections of ancient petroglyphs, dating back about 50,000 years. These tens of thousands of petroglyphs depict animals, spiritual figures, and sacred stories.

Since the 1950s, however, Murujuga has also become one of Western Australia’s largest industrial areas, home to a major fertilizer plant and gas facilities, with the world’s largest urea plant expected to begin operations next year.