panoramic view of the polar rlights over the black forest and the upper rhine plain from the top of the mahlberg tower

freiolsheim karlsruhe moosbronn night rastatt voelkersbach astro astronomy atmosphere aurora borealis beam black forest breathtaking city lights discovery environment galaxy germany glowing green heaven horizon landscape light natural phenomenon mahlberg nightsky no people north northern panoramic polar ponorama rhine plain scenery sky star space stars tower tranquility upper view violet weather