Final answer:
The Makassans did not establish any recorded processing plants in the southern end of Australia, as they focused on the northern coasts during their historical visits for sea cucumber harvesting.
Step-by-step explanation:
The Makassans, historically known for their engagement with the Indigenous peoples of northern Australia, did not establish any recorded processing plants in the southern end of Australia. The question seems to mix different aspects of Australian history, which includes Aboriginal rock art (such as those found in the Nawarla Gabarnmang Shelter), Aboriginal land management with fire to maintain ecosystems, and interactions with outsiders like the Makassans who visited the northern coasts of Australia before European colonization.
The Makassans are known for having visited the northern coasts of Australia to harvest sea cucumbers, which were processed on site before being shipped back to Makassar (now Ujung Pandang, Indonesia). The references provided do not contain information about the establishment of processing plants by the Makassans in the south of Australia.