A man survived a 70-foot fall into one of the most active volcanoes on Earth on Wednesday after he climbed over a metal guardrail at Hawaii Volcanoes National Park, the authorities said.

The man, identified by Army officials on Friday as a 32-year-old enlisted soldier, was trying to get a better look at the cliff edge when he lost his footing. He fell 70 feet into the caldera, or crater, of Kilauea, a destructive volcano whose monthslong eruption last year spewed ash, gas and lava into the air and destroyed an estimated 700 homes on the island of Hawaii.

Park officials said Thursday that the man was seriously injured, but on Friday he was in stable condition, according to an Army spokesman. The authorities did not give further details.