![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhElVaXAG6LM-GS7lYp74dWQCuVhAcwgTRDk6o-ieNhidLkxOiUavcHgOxO0ZCcclOtrBCHEnLXVmzDYUlVhZhSfQ58CJfTe45FPQuw4ia9EhSJ1IHpTTwZec3MsB37_KRjdjfYrGVid7W6/s400/000a5ec9.gif)
A thematic map displays spatial pattern of a theme. This map shows the routes believed to be used for migration during the Ice Age. These routes are a natural land bridge connecting Siberia and Alaska, a Pacific Coast Route and an ice-free corridor that opened in the continental interior once the weather started warming.
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