The new route turned west from Muong May, at the southern end of Laos, and paralleled the Kong River into Cambodia. Eventually, this network extended past Siem Prang and reached the Mekong River near Stung Treng.
The new route followed a westward trajectory from Muong May, Laos, through the Kong River into Cambodia, ultimately reaching the Mekong River near Stung Treng.