In the 1st of april, 2016 we had found the deepest cave of the russian Far East. It's located in JAO, not far from village Tyoplie Klyuchi. The cave is about 170 meters depth. It's a cascade of 4 shafts with the lake (maybe river) on the bottom. The cave have formations unique for russian Far East - crystallictites. Explorers team: Victor Shadrin, Boris Rusanov, Oxana Polevskaya, Elena Gordeeva, Mikhail Amatnyak, Elena Kochegarova, Andrey Muzyko, Daniel Lee. Cave was called "Oleg Shadrin System" in honour of distinguished Khabarovsk caver Oleg Gennadievich Shadrin (1952 – 2007).