On Tenerife, famous for being the island where Admiral Nelson lost his right arm, in battle with the Spanish

We drove upwards of 7000 feet up the slope of Pico de Teide, the third highest volcano in the world....behind only Mauna Kea and Mauna Loa, someplace called the Big Island of Hawai'i.  Vegetation lessened and lessened and became almost nonexistent, as the landscape became more and more otherworldly..  It seemed colder than last year in Antarctica, although we weren't outfitted in that specific Antarctica gear, either.