1.the Indian Ocean
2.Kamchatka
3.the Alps
4.the Bermudas
5.the English Channel
6.the Balkan Peninsula
7.Vesuvius
8.the Panama Canal
9.the Bering Strait
10.Cape Cod
11.Hudson Bay
12.the Rio Grande
13.the Victoria Falls
14.Kara-Kum
15.the Barents Sea
16.Elbrus
17.Cuba
18.Lake Geneva