Walking on ice can be very dangerous. Have proper hiking shoes and wear crampons or similar ice traction attached to the bottom of shoes.
Silky blue to milky white
When ice crystals get compressed, the air inside squeezes the bubbles out and the ice crystals enlarge. Without the air bubbles, light penetrate ice without interference, thus creating the ice’s blue color.
Final Curtain (Upper Ice Cave)
Following Koper’s Trail will lead you to the upper cave. If the east entrance is almost shut with ice, the trails continues by the stream just a little further down to the west entrance.