Here is what a search online said about blue ice:
Snow is white because full spectrum, or white, light is scattered and reflected at the boundary between ice and air. The white color of bubbles at the top of a dark beer work the same way—small pockets of air reflect and scatter visible light. Ice only appears blue when it is sufficiently consolidated that bubbles do not interfere with the passage of light. Without the scattering effect of air bubbles, light can penetrate ice undisturbed. In ice, the absorption of light at the red end of the spectrum is six times greater than at the blue end. Thus the deeper light energy travels, the more photons from the red end of the spectrum it loses along the way. Two meters into the glacier, most of the reds are dead. A lack of reflected red wavelengths produces the color blue in the human eye.

Interesting tree along the 3/4 mile trail to the falls, (they keep this trail well maintained all year round & plowed in the winter) #2 stone bridge over the creek, #3 B&W of snow on rocks in the creek, #4 Taughannock falls with its aqua ice, #5 blue ice is nice, I did a selective color on this one to highlight the aqua ice, not sure why the ice turns aqua I think its the minerals in the water if you know please let me know, #6 forgot to mention the water was cold I slipped in taking this shot good thing it was slightly above my ankle, #7 another little water fall I stopped at on the way home, #8 same water fall as #7 hope you all enjoy the photos please stay safe and well. Scott