Vozrozhdeniya Island Vozrozhdeniya Island Vozrozhdeniya Island () was an island in the Aral Sea. The former island's territory is split between Uzbekistan and Kazakhstan. In 1954, the Soviet Union constructed a biological weapons test site called Aralsk-7 there and on the neighboring Komsomolskiy Island. Vozrozhdeniya was once a small island; it was only in the nineteenth century. However, in the 1960s, the island began to grow in size as the Aral Sea began drying up as the Soviet Union dammed its feeder rivers for agricultural projects. The shrinkage of the Aral continued and accelerated over time. Vozrozhdeniya became a peninsula in mid-2001
Kazakhstan–Uzbekistan border sparsely populated and traverse largely desert areas, in stark contrast to the western third which is densely populated, containing some of the largest towns in Uzbekistan and southern Kazakhstan. The eastern-most section is mountainous and contains a series of national parks (Sayram-Ugam National Park and Aksu-Zhabagly Nature Reserve in Kazakhstan and Ugam-Chatkal National Park in Uzbekistan. Uzbekistan’s Jizzakh to Sirdaryo railway crosses through Kazakhstan briefly, a legacy of the Soviet era where infrastructure was built without regard to what were then internal boundaries. Russia had conquered Central Asia in the 19th century by annexing the formerly independent Khanates of Kokand