Explorer Sam Cossman just uploaded this shocking video to Youtube showing his expedition to the bottom of the Marum Crater. An active and very dangerous volcano located in the Republic of Vanuatu, in the South Pacific Ocean. The images captured are both impressive and terrifying.
According to the youtube description:
Sam Cossman and George Kourounis guided by volcanic pioneers Geoff Mackely and Brad Ambrose become among the first explorers to step foot inside the worlds most dangerous and inaccessible volcano, Marum Crater. More people have visited the moon than the fiery bottom of this spectacular and deadly place.