Segment of the Appalachian Mountains .
It extends 87 mi (140 km) across north-central New Hampshire and into western Maine. Containing the highest elevations in the northeastern U.S., its loftiest peaks, mostly 5,000–6,000 ft (1,500–1,800 m) high, occur in a series of summits that are named for U.S. presidents and make up the Presidential Range. The highest point is Mount Washington . Most of the White Mountains lie within the White Mountain National Forest. It is a popular summer and winter resort area.