| Doing succesfully this
trek without the compulsory permit and guide, I
think we had good amount of luck. We were passing through the middle of
4 army camps on the way and could have problems with possible return in
any of them. But we were not stopped by them at all, only quetioned by
officer when already up at Concordia. I don't think this is universally
repeatable easily, but others may have same luck and wish the luck to
independent trekkers of course.