Each place has its own alter-ego atmosphere at night and this is especially true for Ski slopes.
I haven’t been snowboarding at night for years and the experience was fantastically energizing.
There is something eerily romantic in the lightened up snow paths, stretched between piles of piny unknown darkness. There is also less people on the slope, so the experience is definitely worth trying.
If you would like to see for yourself: lookup Martinovi Baraki before your next ski trip to Bulgaria