These are 2 telescopes at the summit of Mauna Kea. Mauna Kea means "White Mountain" and it is fairly easy to see why; that's snow in the foreground. The ambient air temeprature at the summit was a comfortable -1C, or so said the thermometer in my vehicle. It felt good to walk out and touch the snow as it reminded me of what it was like when I left Ottawa. The general temperature all over Hawai'i when I was there was about 25C.