u can go to dudipatsar throught noori top.....but its is very difficult and long track...as itself , track to dudipatsar is itself very long and demand very high fitness and moral......i went to dudipatsar in june 2009 , and it takes 6 hours +... I called this track a " mannhose" track , because the views are very much deceptive ,,, u see a place ,and u feel that in very short time you will be their ,but infact you will take much more time,which some time demoralized you...
dudipatsar lake ,saral lake ,and noori top , these places infact are in a shape of circle ,or a D , on a map......but its a overall very difficult track and very long..