The most difficult Kaza­khstan riddles

The Caspian Sea, fed by freshwater (sweet) rivers, mainly Volga (80%) and Ural in the north, is freshwater, while it's deeper, warmer and saline (1.2%) in the south. The salinity of Garabogazköl, shallow eastern bay is 35%!

Caspian Sea Shore is 92 feet / 28 meters below sea level. The lowest point of Western Europe is either in Denmark or Netherlands, but it is just 7m below sea level.

The GRES-2 Power Station in Ekibastuz, Kazakhstan was commissioned in 1987. Its reinforced concrete chimney is about 38 metres taller than the Inco Superstack in Canada, making it the tallest chimney ever built. Locals refer to it as "the Cigarette Lighter".

Islam is the largest religion in Kazakhstan, followed by Eastern Orthodoxy. After decades of religious suppression by the Soviet Union, the coming of independence witnessed a surge in expression of ethnic identity, partly through religion. Hundreds of mosques, churches, and other religious structures were built in the span of a few years.

Baikonur Cosmodrome is located in the center of Kazakhstan on the right bank of the Syr Darya river. Both the space launch facility and the neighboring city of Baikonur are rented and administered by the Russian Federation.

Nur Sultan is the capital of Kazakhstan, but not its largest city (it is Almaty).

Lake Chagan, Kazakhstan, is a lake created by the Chagan nuclear test fired on January 15, 1965, part of the Nuclear Explosions for the National Economy. A 140 kiloton device was placed in a 178-metre (584 ft) deep hole in the dry bed of the Chagan River. The blast created a crater 400 m (1,300 ft) across and 100 m (330 ft) deep with a lip height of 20 to 38 m (66 to 125 ft).; it is often referred to as "Atomic Lake".