Exploring the planet through various drone cameras, I could see that something had caused massive destruction. Based on the ruined structures, entire cities had been taken apart. Concrete pylons indicated where bridges might once have spanned rivers. Huge washouts indicated where dams had been disassembled without regard for the downriver effects. And junk littered what looked like roadways, where presumably the contents of some kind of vehicles had simply been discarded when the metal and the passengers were collected.