Katahdin is the highest mountain in Maine and the northern terminus of the Appalachian Trail. It is located within Baxter State Park, a wilderness-managed area in which humans come second that some refer to as the 51st state. The mountain, being a mile above sea level, towers above the comparatively low Maine lakes and forests. Due to the northerly latitude, timberline is at about 3,500 feet. 

Katahdin is most impressive from the south, a sheer-like granite fortress towering to the heights. It's shape is somewhat horseshoe-like with the open end heading northeasterly. Click this link to see an excellent overview photo.There are 5 main peaks on the horseshoe, counterclockwise from the north they go: Howe Peak, Hamlin Peak, Baxter Peak (summit), South Peak and Pamola Peak. The most dominant and intimidating feature on Katahdin is the Knife Edge, an appropriately-named jagged arete only a few feet wide in places and a memorable traverse from South Peak to Pamola Peak. Katahdin is climbed frequently, being a popular destination because of its prestige.