sentences:  Imboden was the first Swiss to ascend an (unnamed) 6,000 meter-high mountain in the Himalayas in 1883, where the highest mountains in the world are located.The fathers trained the sons very early in their expeditions.The initiators of the new school came out of their ranks for the second time, a fact that gave a new input to alpinism and the level of which was not reached again until the 1930's.