The Roman Snail Helix pomatia is very common in Hungary and indeed in most of Central and Eastern Europe. It is also known as Edible Snail, though it is not the only snail that can be eaten... if you are that way inclined. The shells can be quite large, up to 5cm in width, and are usually pale in colour with subtle brown spirals, bands and lines. I often find them up trees, sometimes half-way up a trunk or, like this one here in the photo, nestled in a good spot. Does anyone know why they climb trees like this ?