sam cossman

Nicaragua's Masaya Volcano is also known as the "Mouth of Hell."
George Kourounis is an explorer and documentarian, and last month, he and Sam Cossman, an explorer and filmmaker, dived deep into the Marum crater, located in an active volcano in the archipelago of Vanuatu in the South Pacific.
"Getting to [Marum] was kind of like a reverse climbing of Everest," he said. "The volcano fought back at us, and we had