Ribbon lakes

[Merna]

a long, narrow lake along a deep valley formed by a glacier

[Luis Fok]

BSL Geography Glossary - Ribbon Lake - definition Definition: U-shaped valleys are formed by glacial erosion and can form into long, thin valleys. Over time, after the ice has melted, rainwater fills the valley bottom to form a long, thin lake. This is a ribbon lake. Ribbon Lake. Glacier.