Observation satellite is a satellite into orbit by Shchizenya. And the visual coverage of the entire planet down to five-centimeter resolution thanks to tens of thousands of grapefruit sized spy satellites sown into high orbit. Unfortunately, her vision is severely limited today because of the persistent heavy cloud cover. Satellites are also sensitive to ultraviolet and infrared light so Shchizenya also can observe thermal variation and weather patterns, but the atmospheric density makes satellites only useful for recognizing general trends. Stargate crater.
At the end of the civil war Zhenuija the isolationist faction dropped a hundred-megaton nuclear weapon at Stargate in desperate hope of destroying it. It created just a blast crater eight miles across. Stargate is currently in the bottom upwards with DHD nearby. The craters bowl shape keeps the gate free of debris so that a wormhole to form, but travelers may find themselves temporarily confused by their plan balance suddenly shifts easiest stumble unceremoniously on nearby crater. (RPG: "First Steps: The Stargate Unexplored Worlds Roleplaying Sourcebook")