Biosphere2

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Inside, the control and climate systems under the main chamber.


Tunnels connecting the facilities underground.




The expansion chamber - a large rubber balloon that allowed air to expand and contract with temperature changes.




Walkway around one of the domes.




Neat shape of the door!






Looking into the pool in the main chamber from outside.






Second large chamber, unused at the time


The second large chamber






Cleared, nothing growing.