This huge 'berg was beside us all day as we cut slowly through the ice. As we meandered past and watched the light and shadows change through the day new bits of it kept lighting up, revealing new details.
The blue colour is caused by layers and layers of snow falling and crushing the air out of those beneath.
Location: South Orkney Islands, South Atlantic. Date: 19th November 2015. Camera: Canon 7D with 300mm Canon lens. 1/2500 sec, f/4.0, ISO 200.