We have been traveling in the Northern Territory and were always fascinated by the termite mounds that we drove by. They came in all shapes, sizes and colors.there are 2600 species of termites in the world and Australia has over 350 types in Australia There were just fields of 2' tall slender mound that were 5' on center that looked like.chess pieces. A local tells us that if they get much bigger you need a tractor to knock them over and you can climb all over them with out bothering anything. The large ones are Cathedral that are incredible large and solid. It wasn't easy to climb in shorts but I had to try.