Visualize kames as reverse funnels. As stream tunnels beneath glaciers filled up with debris, eskers formed. Eskers look like inverted streams winding across todays landscape. Depressions in the ground known as kettles , formed as stranded ice blocks melted and the debris covering them subsided. This melting process could take thousands of years.
Some kettles are simple bowl-shaped depressions, but others are now bogs, marshes, or lakes.
Features deposited by the ice itself not by meltwater include ground and end moraines, drumlins , and erratics . The materials that compose them had not been sorted by the action of moving water. Ground moraines were deposited under moving ice, or were just let down like a carpet as stagnant ice melted. End moraines represent glacial dumps at the edge of moving ice and trend perpendicular to the glacier's direction of flow. There are three types of end moraine.