Canada/Nunavut: Ice Pressure Ridge

Ice pressure ridges are formation that develop at sea and large frozen inland lakes when ice platforms collide due to current or wind. The upper portion of the ridge is called a sail, while the thick bottom is a keel. On Ennadai Lake, the ice ridge was across the entire lake, often requiring long driving around to find a passing point (or just flying full speed over it). As the spring progressed, the sun reflecting from the ridge’s sail melted the water along the ridge, creating beautiful blue ice pools.
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