Tree of life!

Built more than a century ago this is a tunnel under the Hijaz Railway connecting Ma'an with Mudawwara. According to wikipedia "The Hejaz (or Hedjaz) railway (Turkish: Hicaz Demiryolu) was a narrow-gauge railway (1,050 mm/​3 ft 5 11⁄32 in track gauge) that ran from Damascus to Medina, through the Hejaz region of Saudi Arabia, with a branch line to Haifa on the Mediterranean Sea. It was a part of the Ottoman railway network and the original goal was to extend the line from the Haydarpaşa Terminal in Kadikoy beyond Damascus to the holy city of Mecca. However, construction was interrupted due to the outbreak of World War I, and it reached no further than Medina, 400 kilometres (250 mi) short of Mecca. The completed Damascus to Medina section was 1,300 kilometres"