Complex sentence: Pack Monadnock or Pack Monadnock Mountain,, is the highest peak of the Wapack Range of mountains and the highest point in Hillsborough County, New Hampshire.
Split into simpler sentences: Pack Monadnock or Pack Monadnock Mountain,, is the highest peak of the Wapack Range of mountains. The summit of Pack Monadnock is the highest point in Hillsborough County, New Hampshire.