A bored prisoner created a perfect scaled down model of a World War II tank to pass away the long hours behind bars.
Alexey Gladilin is serving a lengthy sentence at penal colony number 4 in the city of Tula in western Russia's Tula Oblast region.
To help pass the time, he started attending a welding course during his time off from his prison job as a maintenance worker.
And he then set about using his new-found skills to recreate a one fifth scale model of the famous Soviet T-34 tank.
Gladinin created the parts for the tank himself, welded them together, and painted it in Soviet military green with a red star on the side of the turret.
And his handiwork gained national recognition when it won an award in the decorative and applied art category of an all-Russian fine arts competition for convicts.
The competition was organised by the Federal Penitentiary Service of Russia together with the Union of Artists of Russia.
As well as representing his region in the national contest, Gladinin's model is to go on display at a local military hall of fame.
The T-34 has been credited as the most effective, efficient and influential tank design of WWII.
When it was introduced, it boasted an unprecedented combination of firepower, mobility, protection and ruggedness.