terrestrial - land, expedition - exploration, noble - member of royal or important family, quagmire - a bog or marsh, and figuratively an involved situation difficult to escape, topography - terrain, meridian - one of the lines that is drawn from the North Pole to the South Pole on a map of the world, peninsula - an area of land that is almost surrounded by water but is joined to a larger piece of land, desert - give up,

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