Whatever direction you are approaching Durmitor from, be prepared for long hours on curvey and crowded mountain roads. Unless, you opt for a "local road", in which case you will be dodging between holes in the roads, rocks near the road and a 200+m fall off the edge. But the pain is worth it - Tara Canyon that approaches Durmitor from the east - is the Worlds second deepest, reaching 1400m at some stage. The River itself is green - my guess, because of the minerals found in the crust.

If you decide to drive up-up-up to Durmitor, there are excellent hiking paths and a nice plateau with lakes surrounded by different peaks.