UV Light could ruin your trip at high altitudes. Always wear protective gears.

UV‬ ‪light‬ problems: ‪‎Ultraviolet‬ light is a non-ionizing ‪‎radiation‬ and is divided into UV-A (315 to 400 nm), UV-B (280 to 314 nm), and UV-C (180 to 280 nm). The Earth’s atmosphere absorbs all UV-C radiation and more than 99% of UV-B radiation. It is known that the quantity of UV light increases with increasing altitude at a rate of 4% for each 300 m ascent), low latitude, and in highly ‪reflective‬ ‪environments‬. The reflection of ultraviolet increases two times from the surface of ‪water‬ and eight times from ‪snow‬ when compared to the reflection from a ‪‎field‬ ‪‎of‬ ‪grass‬ and it could damage to almost all ‪eye‬ ‪‎tissues‬ (eye ‪lids‬, ‪‎cornea‬, ‪‎conjunctiva‬ and ‪lens‬)