Rise of the Tomb Raider: Baba Yaga - The Temple of the Witch is an optional tomb found in the Soviet mine. The game add-on is already included in the 20 Year Celebrations edition of the game.

Since this tomb is purchasable, it has to be worth your money and time, so what it offers is a great boss fight and of course a tomb larger than the optional tombs found within the game, but you have to know that in the end, you will finish this in less than an hour.

All in all, a great add-on, but honestly the price it's a bit debatable since it's only an hour long.