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| LowlandArea | 9 | A LowlandArea is a land area lower than the surrounding region, and usually level land. | ^ |
| Plain | 7 | A Plain is a broad, flat or gently rolling area, usually low in elevation. | ^ |
| CoastalPlain | . | CoastalPlain is the class of broad plains areas adjacent to a Sea or Ocean. A coastal plain i... | ^ |
| Prairie | . | Prairie is a class of large plains LandAreas with tall grass vegetation. | ^ |
| Pampa | . | Pampa is a class of vast, level, typically grassy Plains of land in South America. | ^ |
| Savanna | . | Savanna is a class of tropical or subtropical Grasslands, typically treeless. | ^ |
| Steppe | . | Steppe is a subclass of Plain, representing vast, level, treeless areas of land in Asia or SE E... | ^ |
| Veldt | . | Veldt is a subclass of Grasslands which have scattered shrubs or trees. | ^ |
| Tundra | . | Tundra is a subclass of flat, treeless Plains areas lying within the ArcticRegion. Subsoil in... | ^ |
