Ice Age Map: ice sheets, sea levels and lost landscapes
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21,000 years ago
Last Glacial Maximum−128 mSea level · relative to present · estimate
Discover lost lands
Explore Earth’s changing coastlines and ice sheets
Move through 30,000 years of reconstructed geography. Compare exposed shelves, inspect modeled grounded ice thickness, and use the guides to understand what the evidence supports.
The Last Glacial Maximum: when ice sheets were largest
What the Last Glacial Maximum means, when it happened, and why 21,000 years ago is a useful map view rather than one universal peak.
Read guide ↗Ice Age sea levels and changing coastlines
Why lower Ice Age seas exposed land, how global and local sea level differ, and how this atlas calculates its simplified coastlines.
Read guide ↗How Ice Age ice sheets and thickness are reconstructed
How PaleoMIST combines geological constraints and ice-sheet modelling, and what an ice thickness estimate on this map can and cannot tell you.
Read guide ↗