|“|| There is one theory, more of a legend, actually. It's about the Oasis. Unfortunately, I was unable to persuade Hermann to send out an expedition to search for it... You know, rumors about this phenomenon are wildly inconsistent, but if you want my opinion, I am convinced that the Oasis exists. Call it intuition. If you can find the Oasis and bring me irrefutable proof of its existence, then science would be very grateful to you and me.|
The Oasis is underneath the Ventilation Complex, one can reach it from a small building by the train tracks, which leads to a tunnel. This tunnel takes the player to a puzzle which must be solved in order to reach the Oasis. The Heart of the Oasis artifact must be taken to Ozersky as proof of Oasis's existence
7000 RU or the player can keep The Heart of the Oasis artifact, however it can only be sold to Ozersky for 7000 RU.