I WONDER - Can Glaciers Move? Me Pregunto - Pueden Moverse Los Glaciares?

The video explains that glaciers move slowly, often unnoticed, but can travel long distances. The Cutia Glacier in Pakistan holds the record for the fastest glacier, covering 12 km in three months in 1953. Glaciers can flow from higher to lower ground, sometimes reaching the sea and forming icebergs. The largest iceberg on record, B 15, broke off from the Antarctic ice sheet and was seven times larger than London.

What is the process by which icebergs are formed?

What is the significance of the iceberg named B 15?