Inside, the control and climate systems under the main chamber.
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Tunnels connecting the facilities underground.
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The expansion chamber - a large rubber balloon that allowed air to expand and contract with temperature changes.
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Walkway around one of the domes.
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Neat shape of the door!
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Looking into the pool in the main chamber from outside.
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Second large chamber, unused at the time
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The second large chamber
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Cleared, nothing growing.
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