One of those are the glittering blue ice caves or tunnels that the visitors can explore with a certified guide to direct them. These caves can be narrow crevasses or even large caverns depending on the movement of the ice and the temperature at which they were formed. These cool caves are structurally sound and have little or no chances of collapse. The ice here at the glacier has a special blue tint which makes the ice caves glow iridescently and make the experience something straight out of a fairytale. The ice had acquired this particular tint, as the original body of water which constitutes the glacier froze at a highly accelerated rate.