The Discovery Russia makes a brief scheduled stop at Ichoguz, where we have the option to leave the train and make a short journey to Darvaza's famous burning gas crater, a spectacular sight best seen at night. Located in the middle of the Kara Kum desert where the area is rich in natural gas, the 70 metre-wide crater is known by locals as the 'Door to Hell' and has been burning for over 40 years. A unique experience that is not to be missed.