Mapped by the USGS from surveys and U.S. Navy aerial photographs, 1960-63. Named by the northern party of the NZGSAE which explored this area, 1963-64, for the international harmony existing in Antarctica and in particular for the fact that five nations participated in exploration of this region.
The average elevation of the White Mountains in New Hampshire is from 760 to 1,200 m (2,500 to 4,000 ft).
However, Mount Washington, in a part of the White Mountains called the Presidential Range, in north central New Hampshire, rises to 1,917 m (6,288 ft) and is the highest mountain in New England.
The White Mountain National Forest covers 292,000 hectares (721,000 acres) of northeastern New Hampshire with hardwood forests and the largest alpine area east of the Rocky Mountains and south of Canada.