On Wednesday, Salt Lake City public lands officials hiked for hours up a snowy trail to remove a mysterious device – one that’s popping up all over the foothills. It consists of a locked battery box, a solar panel, and an antenna, according to Tyler Fonarow, the city’s recreational trails manager. “These towers have been bolted into different peaks and summits and ridges around the foothills,” Fonarow explained, “and it started with one or two, and now it might be as much as a dozen.” The first ones appeared about a year ago, but Fonarow said many more were found...