It does sound very bad in SA. Good luck to the people and property (and trails) down there and in Vic. I understand why Three is concerned. This sort of firestorm can spread and pop up distant to the original location. I also understand why sometimes public land is closed. When emergency services are stretched to the limit, the need to assist someone can become a problem. That's when our right to put ourselves at risk and ride our bike clashes with the strain on emergency services. So, it's a matter of respect, unless of course you know you never crash or have a mechanical deep in the bush, ever.