Arecibo Observatory, Puerto Rico

Climbers on Mt Everest
Half airplane
Trinity test site
Arecibo Observatory, Arecib
Suggested by: daddyvstar

How cool is this: 3.713.713.713.713.71

The Arecibo Observatory is a radio transmitter built in a cold volcano used for research of astronomy, Earths atmosphere, planetary radar, and SETI.
See it in Google Earth
National Astronomy and Ionosphere Center
Frogs view
Random placemark

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