Eastward from the White Mountains, the open sea of the upland country comes right to the monadnock shore, with hardly an outlying island; southward the upland is covered for miles by an archipelago of monadnock groups and peaks.
a hill or mountain standing isolated above a predominately flat plain
Hyphenation
a Hill or Moun·tain stand·ing i·so·la·ted a·bove a pre·do·mi·nate·ly flat plain