[5] Due to heavy winter snowfalls, Mount Olympus supports large glaciers, despite its modest elevation and relatively low latitude.

[6] As with most temperate latitude glaciers,[7] these have all been shrinking in area and volume, and shortening in recent decades.

[11] Spanish explorer Juan Pérez named the mountain Cerro Nevado de Santa Rosalía ("Snowy Peak of Saint Rosalia") in 1774.

[12] In 1890 an expedition, led by US Army officer Joseph P. O'Neil, reached the summit, of what is today presumed to have been the southern peak.

[13] On March 2, 1909, Mount Olympus National Monument was proclaimed by President Theodore Roosevelt.