Old name of the road M52. Turn on the highway in the mountains. 
P256 road from the city of Novosibirsk to the Russian border with Mongolia. Mostly the road is laid through the Altai mountains
<a href="//commons.wikimedia.org/wiki/User:Alexandr_frolov" title="User:Alexandr frolov">Alexandr frolov</a>
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<span class="int-own-work" lang="en">Own work</span>