Notation	Name	Description	Status
depression	A depression	Lower than surrounding land beyond a 50 m radius, with no sur...	stable
flat	A flat	Slope less than 3 degrees and not a hilltop, ridge, valley bo...	stable
hilltop	A hilltop	Higher than all or nearly all of the surrounding land beyond ...	stable
inapplicable	inapplicable	None of the codes in the table are applicable in the context ...	stable
ridge	A ridge	Higher than all or nearly all of the surrounding land, but el...	stable
saddle	A saddle	A depression located along the axial trend of an anticline; a...	stable
slope	A slope	Neither crest nor depression or valley bottom, and with slope...	stable
unknown	unknown	Unknown local topography	stable
valleyBottom	A valley bottom	Lower than nearly all of surrounding land beyond a 50 m radiu...	stable