Thanks a lot Ravindra for this wonderful nature view and new UNESCO site...
And as usual with many nice stamps!
The reason to call it Knuckles is because there is a mountain with five peaks in itself, that looks like the knuckles of a clenched fist when seen from Kandy area.
The Sri Lankan name for this mountainous area is "Dumbara Mitiyawatha" which means "The Misty Vally". Since this inner mountainous area is off the motoring roads, it remains as an unspoilt nature reserve even today.
Knuckles Mountain Range became a World Heritage site by UNESCO at the world heritage conference in Brazil in 31 of July 2010.