Ultrahazardous Activities Ultragefährliche Aktivitäten Ultrahazardous Activities Actividades ultrapeligrosas Actividades ultrapeligrosas Activités ultradangereuses פעילויות קיצוניות מאוד अत्यधिक खतरानक गतिविधियाँ 超危険活動 Atividades ultraperigosas 超危险活动 An activity that is so inherently dangerous that the person engaging in it is strictly liable for any resulting harm, regardless of whether they were negligent or not.