isolated rock hill, knob, ridge, or small mountain that rises abruptly from a gently sloping or virtually level surrounding plain
An inselberg or monadnock is a large rock formation that sits on its own, surrounded by flat lowlands. It can be a hill, ridge or small mountain. They are found in hot, dry areas of land. The name means "island mountain".
- Neuendorf, Klaus K.E.; Mehl, Jr., James P.; Jackson, Julia A., eds. (2005). Glossary of Geology (5th ed.). Alexandria, VA: American Geological Institute. ISBN 0-922152-76-4.
- Young, David N.; Duncan, N.; Camacho, A.; Ferenczi, P.A.; Madigan, T.L.A. (2002). Ayers Rock, Northern Territory, Map Sheet GS52-8 (2nd edition) (Map). 1:250 000. Northern Territory Geological Survey. Geological Map Series Explanatory Notes.