A monadnock k or inselberg is an isolated rock hill, knob, ridge, or small mountain that rises abruptly from a gently sloping or virtually level surrounding plain. Found on http://en.wikipedia.org/wiki/Monadnock
isolated hill of bedrock standing conspicuously above the general level of the surrounding area. Monadnocks are left as erosional remnants because of ... [5 related articles] Found on http://www.britannica.com/eb/a-z/m/110
a residual hill or mountain standing well above the surface of a surrounding peneplain. · (cap.) a mountain peak in SW New Hampshire. 3186 ft. (971 m). Found on https://www.infoplease.com/dictionary/monadnock