Scope note: This class comprises physical features that are purposely created by human activity, such as scratches, artificial caves, artificial water channels, etc. No assumptions are made as to the extent of modification required to justify regarding a feature as man-made. For example, rock art or even "cup and ring" carvings on bedrock a regarded as types of E25 Man-Made Feature. Examples: - the Manchester Ship Canal - Michael Jackson's nose following plastic surgery In First Order Logic: E25(x) ⊃ E26(x) E25(x) ⊃ E24(x)