nazca or man in the moon

Until a couple years ago when satellite charting services started paying attention to the ocean and the ocean’s floor, it seemed like our educational system was really failing, since 99% of school children could not locate Atlantis on a map. It turned out the apparent submerged roadways and building foundations were shadows and optical illusions (pareidolia, like the Face on Mars) but the excitement at least increased the awareness of some people. Perhaps, ultimately, the strange, man-made patterns appearing in China’s remote Gobi Desert will present the same lesson. It’s mysterious, kind of like the Nazca Lines of Peru, but barring what’s classified or secreted away (surely a fresh sweep is allowed over Iranian and Chinese ambitions but not over Area 51), one will probably be able to divine their purpose, whether defensive or experimenting with new ways of producing energy or drawing water out of a salty aquifer discovered beneath the desert. Before such powerful telemetry became available, the Great Wall of China was considered the only man-made structure "visible" unaided from orbit: I wonder if that distinction is still meaningful when all skyward features, down to the smallest detail, are visible for public scrutiny and imagination.