FROM KINLOCH RANNOCH FOLLOW THE MINOR ROAD TO CROSSMOUNT , WATCH FOR THE SMALL TURN ( EASY TO MISS ) FOLLOW TO TRACK TO THE BRIDGE AT 708 585 WHICH IS DOWN FOLLOW THE PATH UP TO MC GREGORS CAVE , THEN KEEP GOING ALONG THE SMALL PATH TO ABOUT 717 584 THEN TAKE A BEARING TO THE WEIR ITS ABOUT 58 DEGREES . MY MAPS ARE 1987 . ITS QUITE ROUGH GOING,BUT WHEN USE REACH THE WEIR THERES A GATE IN THE DEER FENCE WHICH IS ONLY ON THE LATCH .THE CROSSING IS ABOUT 200YRDS EAST OF THE WEIR AND THEN ITS ALL SIMPLE WALKING TO TUMMLE BRIDGE

Hi Robert, I am going this way myself. Routing as follows,minor road to south side Dunalasatair reservoir - E5km to Crossmount - track N then E via McGregors Cave - X country to weir - E on aqueduct road to pick up B8079 past Electricity sub station. As my vetter said it is not particularly straight forward and could be slow going, however I have done it before and found it a very interesting route. Hope this helps.

If you're worried about getting across the aqueduct beyond the weir be not afeard. There is a bridge.

Many thanks indeed to those who have replied - all very useful!