A natural monument is a small, unaltered or partially altered natural region, structure or phenomenon. It has clear physical definition, is recognisable and unique and has special geological, botanical, water and other characteristics. It also includes man-made botanical features with scientific aesthetic, cultural and educational value.
A natural monument can be:
- geological (rock strata preserving geological history, paleontonological features, rock, sediment and mineral features, geological structures, geological features formed by water etc.)
- geomorphological (features of the landscape)
- speleological (caves, potholes etc.)
- hydrological (all or part of a water-course, waterfall, lake, peat bog etc.)
- botanical (rare or significant specimens of plant life – a single tree or group of trees, rows of trees, parks, arboreta, botanical gardens etc.)