Damar Batu is petrified natural resin of ancient shorean trees. It is much harder than other resins. It has brown and black colors with various sizes (from 1 cm to 20 cm). The resin is obtained through collection of the hardened resin exudates lying below the ground in fossilized form, close to the tree roots. The collected resin is then cleaned to remove mud and dirt residue and then sun dried. It has been preserved and can be found in the ground /earths surface in the jungles of Indonesia.

Damar Batu is applied traditionally by the fishers as wood boat putty by way of mixing with kerosene. It has also been used for incence because it can give pleasant odour when burnt or heated. Nowadays, it is also being used in the manufacture of paints, putty, varnish/shellac.