Thanks to David Griac (jpm) who told me about this circuit, I searched for some more info on the net and I found on Dilantha.comthe following page about dated 2002 about its construction:
Dilantha.com wrote:We built the first Sri Lankan racing track. Hoping to commence races from May. This is a very good technical racing track.
We will have a professional racing school where many Asians could learn racing driving & riding for a affordable price.
I did most of the technical part of the circuit. The length is about 2km. But planning to extend it to about 2.6km.
I had a hard time when I started racing internationally because I did not have the experience comparing to other racing drivers or riders because we did not have a racing track in Sri Lanka.
It was my dream to build a racing track to help young drivers & riders become professionals while in Sri Lanka. Few of my friends helped financially to build this circuit. Without them I would not been able to do it. We formed a company "SPEED DEVELOPMENT LANKA PVT LTD" to promote motor sports in Sri Lanka.
The name of the track is "PANNALA INTERNATIONAL CIRCUIT".