2000 Years of Moth Meals
According to Monash University Archaeologist Professor Bruno David in a University article, the conditions inside the limestone cave helped preserve the Bogong moth remains. He told the Independent that the cool ambient temperature made the soils more alkaline and less acidic, and this means they're perfectly suited to preserve organic materials. Applying a seldom used analysis technique known as “biochemical staining” the grinding stone tool and the moth remains were set on a microscope slide and stained with a special dye that makes collagen and proteins [crushed-up insect remains] within rock fluorescent, therefore, easier to identify.