Here is a short video of less than 30 seconds (above) that helps demonstrate the immense size of the mountains and icebergs of the Antarctic. Note when I change the zoom and you see the people on the bow of the ship compared to the landscape.
There were three icebergs blocking the channel (video below), and the captain maneuvered around them to continue on our way. Note the size of the iceberg closest to the ship. It has a freshwater pool in the middle of it from the melting snow and ice.
The final video includes a better shot of the iceberg and the pool of freshwater in its center from the observation deck (Deck 13) on the ship.