From Urumqi the northern route goes to Almaty in Kazakhstan and a decade ago my friend Blackie, the cowboy carpenter, arrived in Almaty on a flight from Amsterdam.
Slightly drunk, wearing jandals and without a visa, Blackie had planned for his brother Mike, who was teaching in Kazakhstan, to help him get in - but Mike wasn't there.
Kazak Customs were suspicious of all the different stamps in Blackie's passport. "International traveller eh!," sneered the uniformed Customs officer in an oversized, braided Russian cap and Blackie caught a glimpse of his brother arriving as he was frogmarched on to the next flight to Schiphol.
Blackie never made it to Almaty but my friend Chris, the international English literature teacher, had spent a year working there as well as doing another stint in Uralsk, in Kazakhstan's far west, where the temperature goes from minus 50C in the winter to plus 50C in the summer.
Kazakhstan (2020 population 18 million) by my rules is too large to qualify as a millisphere and we ended up dividing Kazakhstan by watersheds into the millispheres of Aral, Balkhash and Kazak (see map).
Before examining Kazakhstan through my human geography model of the millisphere, we should pause to look at Halford MacKinder's influential 1905 "Heartland" geopolitical model.
Mackinder saw the world through the lens of the British Empire. British control of its empire was only possible through being the world's pre-eminent navy, he reasoned, and its ultimate threat was from the centre of Eurasia - far from Britain's navy. Britain's bogeyman at the time was Russia whom they feared would invade India - overland.
MacKinder's mythical "Heartland" coincides with present day Kazakhstan. MacKinder's homily that "whoever controls Eastern Europe controls the Heartland and whoever controls Heartland controls the 'World Island'" - being all of Europe and Asia - resonated with the post-war United States, inspiring a Cold War with the Soviet Union. If anyone controls the "Heartland" today it is China but MacKinder didn't see China coming.
In 1991 the USSR shattered into the independent states we see today. The Baltic "republics" lead the way as the peripheral states broke away and when Russia finally declared independence Kazakhstan was left as the last member of the USSR.
Geopolitics credits geography with determining the rise and fall of empires - 20th century thinking. The millisphere model credits human geography with revealing the relationship that we humans have with our environment - 21st century thinking.
Central Asian physical geography starts with plate tectonics. Mountain ranges like the Himalayas, Pamir, Tien Shan and Hindu Kush thrust up as land masses collide and, like an old fashioned hub cap crumpling, depressions like the Tamin and the Caspian plunge to below sea level.
Of the three millispheres of Kazakhstan, two (Aral and Balkhash) drain into inland seas and lakes - the Aral Sea and Lake Balkhash respectively. One millisphere (Kazak) drains north into the Ob River in Russia which discharges into the Arctic. A common theme is the environmental degradation of these landlocked seas as rivers were harnessed for irrigation.
There are at least 10 good reasons not to travel but it is still possible to travel in the mind. In my next three articles I propose to travel through the millispheres of Aral, Balkhash and Kazak with my friend Chris who has promised to start by writing up the millisphere of Aral for me.