‘Ondergrond’ can be tricky to translate as it can have many meanings, such as:
- harde ondergrond
- hard standing
- hard subsurface
- hard substrate
- hard surface
- hard ground
- hard substratum
- hard subsoil
- subsurface = The stratum or strata below the earth's surface.
- substrate = An underlying substance or layer.
- ground = The solid surface of the earth.
- subsoil = The soil lying immediately under the surface soil.