In the beginning of 2007 the urban exploration community of St.-Petersburg was excited by a news: someone had found out a big system of utility corridors (he had called it "Kurakinskaya") connecting basements of a complex of buildings. Accroding to the Russina tradition, there was no location of the place disclosed, only some hints. So our team "Children of Underground" had started a quest. After some fruitless attempts we had luck and found this system under an old hospital. The complex of houses was built in the beginning of the XXth century. By design there was a central heating of the hospital buildings supplied by the boiler shop, and hot-water pipes were laid in the system of utilidors. To the moment of our first visit among the hospital buildings two or three were abandoned, and in the underground system old parts were neighboring with new ones (pic 1–11).
Soon after the described events Mutabor had met Soul and made a tour for her in the Kurakinskaya system (pic 27–32).
After some years we had returned to the system and visited some new parts of if. We had found out some flooded basements chaotically crossed with pipes, containing some rusted constructions which we had called "Basements of Horror" (pic 33–43). Also Mutabor had made a tour for two guys from Kiev in the system (pic 44–65). During this tour they had explored an abandoned building of the former food block.
After Mutabor had come back from Germany, he had visited Kurakinskaya system again together with Rada and Grigory. At first they tried to explore a branch of the system, where a flooded utilidor (pic 40) had led, but there they had met a pile of sacks with sand. So they had visited some other new parts of the system (pic 81–84).
Finally Mutabor and Max had dug a hole in the pile and got into the next part of the system. They were lucky to overcome also a lattice closing the passage without breaking anything. They had reached a flooded utilidor where water was covered by a layer of black oil! Explorers had dirtied their clothes with black oil overcoming this passage, but faced another lattice with no way to overcome it :( So they came back and visited the continuation of the passage, where Mutabor, Rada and Grigory had stopped before (pic 84). At the end of this utilidor they saw... a new closed door preventing the penetration to the continuation of the system! (pic 85–92).