Marri gum is a natural gum obtained from the Corymbia calophylla tree, commonly found in southwestern Australia. This tree is known for its large size and distinctive bark. The gum is harvested by making cuts in the tree's bark, allowing the resin to ooze out and harden. The gum has been traditionally used by Indigenous Australians for various purposes, including as a food source and for medicinal applications. It is also valued for its potential in crafting and as a natural adhesive. Today, Marri gum is recognized for its unique properties and is sometimes used in artisanal products.