Sand goanna the scent is stronger. Upon identifying this difference in scent strength the sand monitor can alter its direction accordingly. Sand goanna The sand goanna ("Varanus gouldii" ) is a species of large Australian monitor lizard, also known as Gould's monitor, the sand monitor, or racehorse goanna. In some Aboriginal languages, the sand goanna is called "bungarra", a term also commonly used by non-Aboriginal people in Western Australia. In Pitjantjatjara and other central Australian languages it is called "Tingka". The name "sand monitor" can be used to describe various other species. The specific name, "gouldii", is a Latinised form of the
Hail cannon Hail cannon A hail cannon is a shock wave generator claimed to disrupt the formation of hailstones in the atmosphere. These devices frequently engender conflict between farmers and neighbors when used, because they are repeatedly fired every 1 to 10 seconds while a storm is approaching and until it has passed through the area, yet there is no scientific evidence for their effectiveness. In the French wine-growing regions church-bells were traditionally rung in the face of oncoming storms, later replaced by firing rockets or cannons. A mixture of acetylene and oxygen is ignited in the lower chamber of the machine.