Turkmenistan is sitting on one of the largest natural gas fields in the world and the country has the potential to meet energy demands from some of the world's biggest economies.

But getting access to the world’s fourth largest reserves, estimated at on about 25 trillion cubic metres, remains a major stumbling block for energy-hungry nations as it decides to do without foreign involvement.

Al Jazeera's Robin Forestier-Walker reports from the Karakum desert in the Central Asian country.