Dear Friends, Look please at new gallery of the ARGENTUM PHOTO: Adventures in Mexico - B.A.S.E. and Cave Climbing (The Russian Extreme Project) http://www.leonids.ru/cgi-bin/aphotothemes/mexico_base.cgi Adventure's Participants: Valery ROZOV, Kirill KISELEV, Vadim POPOV (B.A.S.E.); Denis PROVALOV, Oleg KLIMCHUK, Konstantin MUKHIN (Speleo Support, CaveX Team), Lev DORFMAN (cameraman), Andrey KAMENEV (photography). Several words from Valery ROZOV: Sonato de las Golondrinas Cave is one of the deepest, open in the world, vertical karstic cave. Its depth from 330 up to 375 meters, all depends on that from what side to consider, as it is on a slope of mountain and its bottom too has an inclination. Itself Cave diameter of an entrance aperture of 50 m., diameter of a bottom of 150-180 m extends from top to bottom like a bottle. Time in free falling 7-9 seconds. Best regards, Leonid SELEMENEV Argentum Photo agency - http://www.sports-media.ru The Russian Photography Art - http://leonids.ru/photoart/voronin/eng/