Eucalypts have a habit of dropping entire branches off as they grow. Eucalyptus forests are littered with dead branches. The Australian Ghost Gum "Eucalyptus papuana" is sometimes called the "widow maker", due to the high number of tree-felling workers who were killed by falling branches. Many deaths were actually caused by simply camping under them, as the trees shed whole and very large branches to save water during droughts. For this reason, you should "never" camp under large eucalyptus branches.