Mr Pathak adds that Nepal's mountainous terrain also makes it an ideal place to cultivate coffee.
The militants have had years to entrench positions that are dug into mountainous terrain of goat tracks, caves and thick forest.
Officials say there simply aren't enough troops to hold Afghanistan's mountainous terrain or to deal with the growing number of fighters.
Austria does not use them, on the grounds that the shadows cast by very mountainous terrain sometimes make satellite images inaccurate.
The first trial run demonstrated that 1 km of high-density polyethylene pipe could be laid down over mountainous terrain and in windy conditions in just nine minutes.
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Given the reluctance of western governments to face the messiness of ground warfare in mountainous terrain, military aid to Montenegro would presumably take the form of air support.
He officially retired in 1990 but was lured back to work to build the Konkan Railway, which runs through mountainous terrain to connect strategic ports in Mumbai and Mangalore.
Then back on the bikes to continue an ordeal that started before dawn with 35 miles of orienteering through mountainous terrain, followed by a rappel down a 250-foot cliff.
He walked 1, 028km (640 miles) in 20 days from east to west Nepal and the following year he trekked about 300km from north to south in nine days -- a tougher walk because of mountainous terrain.
Its special forces also have long experience in fighting Kurdish rebels in south-eastern Turkey - a mountainous region whose terrain is similar to Afghanistan.
It is also remote and mountainous: ideal terrain for guerrillas.
Yet the Afghan air force has limited strength, so Nato air support is considered crucial, especially for operations in harsh terrain and mountainous areas, our correspondent says.
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