What is this for a strange marking seen on
http://www.wikimapia.org/#lat=47.36733&lon=19.1607571&z=16&l=5&m=b&v=8?

I suppose they are marking the track of the future motorway.

Archaeological exploration before motorway building. This is trial trenches.

Yeah, this is it. My cousin worked there all summe long last year. They didn't find too much valuable thing.