@Gennadiy Tarassenko
Thanks. Now that you show me the first ones, i learned to seek these my self too. The black spot -balls are clearly recognizable in the satellite picture, and if oyu change to map and then to terrain you get this kind of view;
https://www.google.ru/maps/@44…9948,11.34z/data=!5m1!1e4
This helps to search similar places, and so I actually even found this; "Balls Valley"
https://www.google.ru/maps/@44…26m/data=!3m1!1e3!5m1!1e4
Just few km south-east from there is an interesting valley Full of these dots. So many, that I have doubts if these are bushes. This place might not been even explored yet.
https://www.google.ru/maps/@44…30m/data=!3m1!1e3!5m1!1e4