MatRowley
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Interior staircase inside the Biosphere 2 Earth systems science research facility near Tucson, AZ. Very cool structure and entrance is by guided tour only. I re...
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Interior staircase inside the Biosphere 2 Earth systems science research facility near Tucson, AZ. Very cool structure and entrance is by guided tour only. I remembered this facility from when I was a kid and always wanted to visit. I believe it was well worth it.
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