It is fairly rough terrain there. With autumn coming on they have to be rescued soon. This was probably the end of their summer research. 
Mount Mageik and Mount Martin (far right) from the northeast, both emitting steam plumes from their summits, July 1990. (photo by R. McGimsey, USGS) 
By Chris KlintChannel 2 News11:25 a.m. AKDT, September 6, 2013ANCHORAGE, Alaska—
Alaska Air National Guard (click here) rescue crews are trying Friday to reach three occupants of a helicopter stranded by poor weather since Wednesday night on a volcano in the Alaska Peninsula.

According to a Friday AST dispatch, Dillingham troopers were informed at about 6:25 p.m. Wednesday that an Egli Air Haul Inc. Bell 206B3 helicopter, piloted by company president Sam Egli and carrying passengers Taryn Lopez and John Paskieitch, were trapped at Mount Mageik’s 8,500-foot level in Katmai National Park and Preserve....