23 November 2018. West of Sichuan province, China. Going over a pass at 4,736 meters high. Passage dâun col a 4,736 mÃ¨tres. This ancient muleteer path was not known by the local Tibetans of the Xiang Yi village and was discovered by Constantin de Slizewicz during his first expedition in the Spring 2016. A young female muleteer waits for her turn before going over the pass at 4,736 meters.