a possible Natrix tessellata lacking dark spots or a form of Natrix natrix?
The mystery snake:
The length was around 90 cm, and the snake appeared very slender, with a small head. It was found in semi-desert surroundings with very sparse vegetation, in a small ravine on clay soil.
According to general distribution, the following species might occur (not mentioning Natrix and Gloydius halys):
Hemorrhois (Coluber) ravergieri
Elaphe (quatrolineata) sauromates
I have observed several Elaphe sauromates in the area but none of the other two.