The researchers prepared several dishes using Spam, including a Cajun jambalaya and a fried rice noodle dish.
She said Hawaii's temperate weather and Mauna Loa's geological features were a perfect setting for the study. The area is isolated, yet accessible, and has no visible plant or animal life.
"It looks like Mars," she said.
Team members will spend several days in debriefings after they emerge from the dome. They'll likely be disoriented from the experience, Binsted said, and they have requested a beach outing before returning to their regular lives.
"I'm not used to large crowds anymore," said Vermeulen, a biologist, space researcher, filmmaker, visual artist, community organizer and author. "We need to get used to people again."
One of the first things they did when they came out of the habitat was have a buffet breakfast. "They went straight to the fruits and vegetables," Binsted said. "They seemed delighted to have fresh fruits and vegetables."
It will take several months to process all the data gathered. Binsted hopes to present findings at the International Astronautical Congress later this year in Beijing.