2) Saint Gotthard, mountain group, Switzerland. The Columbia Encyclopedia, Sixth Edition. 2001
...Lepontine Alps, S central Switzerland, rising to Pizzo Rotondo (10,472 ft/3,192 m high). The Reuss, Rhine, Ticino, and Rhone rivers rise there. It is crossed by the...

3) coral reefs. The Columbia Encyclopedia, Sixth Edition. 2001
...The accumulation of skeletal material, broken and piled up by wave action, produces a massive calcareous formation that supports the living corals and a great variety...