Termite Mounds

Not only does Litchfield Park have spectacular waterfalls, it is also home to hundreds of magnetic termite mounds. Unique to northern parts of Australia, the two metre high structures are built with their thin edges pointing north-south and broad sides facing east-west.

Amitermes meridionalis, commonly known as the Magnetic Termite, have cleverly grasped the concept of thermo-regulation and this orientation creates high humidity and stable temperatures within the mound.

A large mound may house up to a million termites comprising the queen, king, reproductives, soldiers and workers. Although the exterior is hard and durable, the material inside separating the chambers and galleries is a papery texture.

Another fascinating inhabitant of this area is Nasutitermes triodiae, the Cathedral Termite. Their mounds are much bigger, reaching four to eight metres in height and the hollow columns inside create a central air-conditioning system to enable the colony to remain cool.

There is a very impressive example of a cathedral termite mound, estimated to be over 50 years old, surrounded by a boardwalk to allow for closer inspection.

These feisty little insects have a long, horn-like snout with which they can cut grass to add to saliva, sand and faeces to make the mound. They can defend the colony by shooting chemical secretions from their snout to irritate and repel invaders.

Some Aborigines believe that anyone who knocks over a mound will get diarrhoea. Coincidentally, termite mounds contain high proportions of kaolin, a compound used for the treatment of indigestion and diarrhoea.