Out of a total of 298 features, more than half belong to the build-up type (accumulation and layers), while the horizontal surfaces (floors and pavements) account for less than 10%. Here are the exact figures.
| type | total | percent | |
| build-up (accumulations, layers) | 166 | 56% | |
| amorphous amassment (fill, dumping, collapse) | 59 | 20% | |
| ordered aggregation (walls, installations) | 47 | 16% | |
| horizontal surfaces (floors, pavements) | 26 | 9% |
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