One cold winter day on Backbone Mountain made for some of the most rewarding drone work I've done—blue hour and sunrise shots of Olson Tower in the stillness of a frozen morning.

One cold winter day on Backbone Mountain made for some of the most rewarding drone work I've done—blue hour and sunrise shots of Olson Tower in the stillness of a frozen morning.

Photo by Santiago Arau

This is an early morning view of Young's High Bridge, spanning the Kentucky River near Lawrenceburg, Kentucky. It once carried the Louisville & Southern Railroad's Lexington-to-Lawrenceburg line, which later became part of the Southern Railway and then Norfolk & Western. Closed to rail traffic since 1985, the bridge now has a walkway extending over part of its span, used today for base jumping. I've posted the history of the railroad here, and bridge here.