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
Permanent Representative of Colombia to the United Nations Office at Geneva Permanent Representative of Colombia to the United Nations Office at Geneva The Permanent Representative of Colombia to the United Nations Office at Geneva is the Permanent Representative of the Republic of Colombia to the European Office of the United Nations and Other International Organizations at Geneva. The officeholder holds the rank of Ambassador Extraordinary and Plenipotentiary. The Representative is Colombia's foremost diplomatic representative at the UNOG, and Chief of the Colombian Delegation to the UN in Geneva. The officeholder is charged with representing the interests of the President and Government of Colombia in relation to the missions of the specialized