Earthwalk Day 1359 (12 October 2025), 13,801 km: Kitt Peak National Observatory

As forecast, I completed leg 53 today, arriving at Kitt Peak National Observatory. This is a pretty huge facility, more domes than a state capitals’ convention. There are more than twenty optical telescopes, including the Mayall 4 meter, at one time the second largest telescope in the world, and the WIYN 3.5 meter. There also are two radio telescopes.

Back I go down the mountain.

A map showing my progress is here, a spreadsheet with progress detail is here, and a Google Earth KMZ file is in this Google Drive folder. Present coordinates: 31.958°N, 111.605°W.