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How could so many geoglyphs hide in plain sight? Over time, many of the lines and figures have been reduced to faint depressions in the soil, visible only on 3-D scans of the terrain captured by the eagle-eye perspective provided by drones.
But the lines that trace the newfound geoglyphs are mere inches across—too fine to spot from space.
Low-flying drones operating at altitudes of 200 feet or less, in contrast, can spot objects less than a half-inch wide.
originally posted by: SlapMonkey
So, lines that are just inches across...why so thin?
originally posted by: Doxanoxa
a reply to: rickymouse
I really like the idea of hot air balloons being an ancient technology, but I'm at a loss as to why they wouldn't be recorded in pictures some place.