Ultralight Sightseeing - Arizona - Oracle - Biosphere 2

Ultralight Sightseeing - Arizona - Oracle - Biosphere 2

Biosphere 2 is located in Oracle, Arizona. It is a center for research, outreach, teaching, and lifelong learning about Earth, and its place in the universe. It was built between 1987 and 1991, and is the largest closed ecological system ever created.

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