Mount Katahdin ( ) is the highest mountain in the U.S. state of Maine at . Named Katahdin by the Penobscot Native Americans, which means The Greatest Mountain, it is located within Northeast Piscataquis, Piscataquis County, and is the centerpiece of Baxter State Park. It is a steep, tall massif formed from a granite intrusion weathered to the surface. The flora and fauna on the mountain are typical of those found in northern New England.