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A large map on the left shows Greenland’s bedrock topography that lies below the ice sheet. A column of smaller maps on the right zooms in on several features, including long, straight valleys on the west-central part of the island. Other insets show a megacanyon, as well as valleys radiating outward from the highlands.

A large map on the left shows Greenland’s bedrock topography that lies below the ice sheet. A column of smaller maps on the right zooms in on several features, including long, straight valleys on the west-central part of the island. Other insets show a megacanyon, as well as valleys radiating outward from the highlands.
A large map on the left shows Greenland’s bedrock topography that lies below the ice sheet. A column of smaller maps on the right zooms in on several features, including long, straight valleys on the west-central part of the island. Other insets show a megacanyon, as well as valleys radiating outward from the highlands. 图：NASA
许可证
NASA Image and Media Guidelines
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