Eight-thousand, two-hundred feet above sea level on the northern slope of Mauna Loa in a place surrounded by the barren, lava-rock landscape of an abandoned quarry, six scientists are living in isolation for 365 days in a roughly 1,000 sq. ft. dome.

That’s tight quarters. That’s a year stuck in a space not much larger than a racquetball court.

The domed habitat is called HI-SEAS, the Hawai’I Space Exploration Analog and Simulation.