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Croatia, Island of Krk
(imgur.com)
Don't kill snakes! Also, be careful when taking photos of them and don't put yourself in danger when doing so.
Rules:
I'm definitely not a snake expert. It just looks longer and more like an Aesculapian snake to me.
Same, no expert. If it's over 3 feet then it probably is Aesculapian. Hard to get a sense of size reference from the photo but I'd say it's on the longer side.