stone block made of one single piece; object made of one single rock piece.
A monolith is a geological feature. It is a massive stone or rock.
In other words, a monolith is what's left after most of an original rock or mountain is worn away.
Other websites change
- Regarding Uluru/Ayers Rock and earlier representations of it as the largest monolith: GA.gov.au, ABC.net.au, Wayoutback.com.au