Lee's Ferry

Historical marker location:

Marble Canyon, Arizona

( Marker can be reached from U.S. 89A at milepost 538.)

Marker installed: 1961

The world's largest solar telescope is located in Arizona: The Daniel K. Inouye Solar Telescope, located on the summit of Haleakala in Maui, Hawaii, is the largest solar telescope in the world. However, the next largest solar telescope, the McMath-Pierce Solar Telescope, is located at the Kitt Peak National Observatory in Arizona.