In days 6.03.-9.04.2004 there was Speleoclub’s Beaver expedition which has for purpose to defeat the deepest chinese cave’s well BaiYudong (-424 m). In 16.03.2004 Tomasz Kuźnicki, Marcin Furtak and Daniel Oleksy stood at the bottom of the well. Zenon Kondratowicz and Bogdan Napieraj also taked part in this expedition. After the wells Vrtglavica, Provatina, Patkov Gust, Hades, Sottano del Barro and BaiYuDong we’ve got only two...to capture the underground crown of the world.