Maine is very, very, old when it comes to geological history. In Piscataquis County, one can easily see the changes of time, from the volcanic activity many millenia ago, to the most recent ice age only 10,000 years ago.
World famous Mount Kineo was once the lava dome beneath an ancient volcano. Today, it is an 800 foot mountain of rhyolite that rises dramatically from the 300 foot depths of Moosehead Lake. Since the constant erosion by mile deep glacier ice during the most recent ice age, Kineo became well known to the Native Americans who traveled great distances to Kineo for the hard rock with flint-like qualities that was used for tools, spear points and arrowheads.
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