Siberian gulag escapees walk 4000 miles overland to freedom in India.
Basically an adventure drama made with expertise, wonderful landscape photography and a good cast, the political message is merely an afterthought.
On rewatching; I agree it is mostly watchable as a successful adventure movie.
Maltin**1/2: "Episodic story is told on a vast canvas, in a grand style reminiscent of David Lean. Unfortunately, despite some genuinely exciting passages and strong performances, the film goes on too long and leads to an unsatisfying conclusion. Perhaps its most noteworthy achievement is making us believe its actors are genuinely Russian, Polish, etc."