Geneva 15.7%. Of the agricultural land, 0.3% is used for growing crops. Of the water in the municipality, 0.2% is composed of lakes and 2.9% is rivers and streams. The altitude of Geneva is , and corresponds to the altitude of the largest of the Pierres du Niton, two large rocks emerging from the lake which date from the last ice age. This rock was chosen by General Guillaume Henri Dufour as the reference point for surveying in Switzerland. The second main river of Geneva is the Arve, which flows into the Rhône just west of the city centre. Mont Blanc
History of Geneva broke out from time to time. Even after the ousting of bishop la Baume from Geneva, the triumph of Protestantism was not assured, as the Catholic faction within that city conspired with Fribourg to act for the return of the Catholic bishop to Geneva. La Baume himself was reluctant at first, but Pope Clement VII pressured him to accept. On July 3, 1533 - with military aid from Fribourg - the bishop once again entered Geneva in a procession. The Grand Council demanded from the bishop to honor the traditional freedoms of the republic, which he promised to uphold. However,