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1. Hungary, 2. Hungary, 3. Hungary, 4. Hungary
Just kidding.
First looks like Tatra for example in Northern Hungary.
Fourth: Mongolia
Second and third, wouldn't even dare to guess. I'm pretty sure neither Hungary nor Netherlands... but that still leaves a bunch of possibilities.
Tho, the third maybe is on the Balkans. Maybe Grease. Or in Italy, Sicily.
Huh, second one could be in the Mediterranean. Spain, Portugal? So I dared to guess in the end.