Depending on when it was formed, the size and speed it is moving it could be either an Avalanche or Glacier. If it is an incredibly old, slow moving, large, ice mass it is likely a Glacier; however if it is a quickly moving, small (relatively), ice mass it is an Avalanche.
A large mass of snow and ice
The term for a slowly moving mass of ice is a glacier.
That is usually called a glacier
Glacier A continuous mass of ice covering a . . A continuous mass of ice covering a large landmass is known as a mass of perennial ice. (general term). The ice covering Antarctica is called an ice sheet, and it covers 98% of the continent.
kettle
It is a glacier.
Depending on when it was formed, the size and speed it is moving it could be either an Avalanche or Glacier. If it is an incredibly old, slow moving, large, ice mass it is likely a Glacier; however if it is a quickly moving, small (relatively), ice mass it is an Avalanche.
A large mass of snow and ice
The term for a slowly moving mass of ice is a glacier.
A large thick mass of ice that moves is an Iceberg.
That is usually called a glacier
Glacier A continuous mass of ice covering a . . A continuous mass of ice covering a large landmass is known as a mass of perennial ice. (general term). The ice covering Antarctica is called an ice sheet, and it covers 98% of the continent.
A glacier
A glacier is an ice mass formed from years of accumulated snow that may be moving slowly.
a mass of snow, ice, and rocks falling rapidly down a mountain side
glacier