If my upcoming Peru vacation is a success, it will be because I was able to withstand life at 12,000 feet (3,650 meters) altitude. The high point (both literally and figuratively) of my trip will be at Puno, a somewhat ungainly city on the shores of Lake Titicaca. There will be short times during which I will be at 15,000 feet (4,570 meters) or more as I go over mountain passes between Arequipa and Chivay, between Arequipa and Puno, and between Puno and Cusco.
The hotel at which I will be staying—the Casa Andina Classic Tikarani on Jirón Independencia—provides oxygen for its guests as well as mate de coca if I am beginning to feel the onset of acute mountain sickness, or soroche, as the natives call it.
In the end, it is possible I am making too much of all this, but I will be traveling by myself. I have to be prepared to take immediate action in case I am one of the 1-2% of travelers in danger of High Altitude Cerebral Edema (HACE) or High Altitude Pulmonary Edema (HAPE). If that happens, I will immediately return to Arequipa and figure out a Plan B that involves visits to Tacna, Peru and Arica, Chile, cities that figured in the War of the Pacific (1879-1883), in which Bolivia lost its seacoast. (Even so, they still have admirals.)
If I find I can take the altitude, I’ll spend a night on Isla Taquile, which involves a 400 foot climb up a trail to reach the center of town. There, I will spend a night with one of the local families before returning to Puno by launch the next day.
After Puno, I head downhill to Cusco, and later still further downhill to Ollantaytambo and Machu Picchu.