4K CABVIEW Belgrade urban and suburban railway line - Novi Beograd - Ovča - Batajnica - Novi Beograd
4K CABVIEW Bar - Bijelo Polje -- over 1000m winter altitude change from Sea coast to snowy mountains
4K CABVIEW Beograd Railway Junction -- Rail Yard Zemun - Ovča - Resnik - RY Zemun -- BG voz commuter
4K CABVIEW Dimitrovgrad - Niš (Sićevo Gorge rock cliffs and Nišava river valley -- Southeast Serbia)