Mots Croisés 6th grade (Unit 3) - GeographyVersion en ligne 6th grade (Unit 3) - Geography par Oscar Del Estal Martínez 1 A land mass that sometimes is very high. Teide is the highest in Spain. 2 A ravine formed by a river in an area with little rainfall. In Colorado, USA, we can find a very wide one. 3 A large natural stream of water. It starts in the mountains and ends in the sea or in the ocean. 4 An arid region with little or no vegetation. In Africa there are a lot of them. 5 A large body of water. The Atlantic and the Pacific are the biggest. 2 5 3 1 4