Langgolo, end of the motor-road. The serious things start: 41 barrels, 18 paperboards, 36 packages of gas, 10 marine bags, 9 cans of kerosene, 6 personal tents, 1 kitchen tent, 1 mess tent, 15 bags of food for the base camp, i.e. a load of 2.5 tons… then, one starts with what?