Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Central Stadium is the home stadium of Volgar Astrakhan and it holds 17,500 people, all seated. The stadium was originally built in 1955 but it underwent a total reconstruction in the summer of 2013. The stadium has been earmarked as a training facility for the 2018 FIFA World Cup.
Background
Lokomotiv played their 7th Russian Cup final, second only to CSKA's 10. Prior to the 2015 final, they have won five, against the seven won by their cross town rivals. Their most recent appearance at the final was in 2007. Indeed, they faced the now-defunct FC Moscow and won the contest courtesy of a goal from Garry O'Connor in extra-time.
As for Kuban, it was their first ever appearance at the Russian Cup final. Indeed, their best performance ever in the Russian Cup came in 2012–13 Russian Cup, when they were eliminated by Zenit on penalties in the quarter-finals. As a side note, Leonid Kuchuk, the current manager of Kuban, faced Lokomotiv in the final after he was sacked from the same position earlier this season following a disappointing start at the helm of the Muscovite club.
It was also the first time that the two clubs met in the Russian Cup final.