I am just making some space on my PC and came across these photos. I haven't heard from Arnaud for a long time so I am not sure whether his plan to run offroad tours around Lake Baikal ever get off the ground.
His photos make it look stunning
Google says; "Lake Baikal is an ancient, massive lake in the mountainous Russian region of Siberia, north of the Mongolian border. Considered the deepest lake in the world, it’s circled by a network of hiking paths called the Great Baikal Trail. "