Mechanical grinding of bedrock by glacial erosion creates rock flour or glacial flour, which is known as glacial milk when mixed with water. Here, a river full of glacial milk flows into the Cook Inlet in southern Alaska, USA Copernicus Sentinel-2B data.

Mechanical grinding of bedrock by glacial erosion creates rock flour or glacial flour, which is known as glacial milk when mixed with water. Here, a river full of glacial milk flows into the Cook Inlet in southern Alaska, USA Copernicus Sentinel-2B data. 

Mechanical grinding of bedrock by glacial erosion creates rock flour or glacial flour, which is known as glacial milk when mixed with water. Here, a river full of glacial milk flows into the Cook Inlet in southern Alaska, USA Copernicus Sentinel-2B data. 

Mechanical grinding of bedrock by glacial erosion creates rock flour or glacial flour, which is known as glacial milk when mixed with water. Here, a river full of glacial milk flows into the Cook Inlet in southern Alaska, USA Copernicus Sentinel-2B data. 

Mechanical grinding of bedrock by glacial erosion creates rock flour or glacial flour, which is known as glacial milk when mixed with water. Here, a river full of glacial milk flows into the Cook Inlet in southern Alaska, USA Copernicus Sentinel-2B data. 

Mechanical grinding of bedrock by glacial erosion creates rock flour or glacial flour, which is known as glacial milk when mixed with water. Here, a river full of glacial milk flows into the Cook Inlet in southern Alaska, USA Copernicus Sentinel-2B data. 

Mechanical grinding of bedrock by glacial erosion creates rock flour or glacial flour, which is known as glacial milk when mixed with water. Here, a river full of glacial milk flows into the Cook Inlet in southern Alaska, USA Copernicus Sentinel-2B data. 

Mechanical grinding of bedrock by glacial erosion creates rock flour or glacial flour, which is known as glacial milk when mixed with water. Here, a river full of glacial milk flows into the Cook Inlet in southern Alaska, USA Copernicus Sentinel-2B data. 

Mechanical grinding of bedrock by glacial erosion creates rock flour or glacial flour, which is known as glacial milk when mixed with water. Here, a river full of glacial milk flows into the Cook Inlet in southern Alaska, USA Copernicus Sentinel-2B data.