The Mahoosuc Arm is a prominent ridge located in the Mahoosuc Range of the White Mountains in New Hampshire. It is part of the Appalachian Trail, which attracts hikers and outdoor enthusiasts. The area is known for its rugged terrain and beautiful views, making it a popular destination for those seeking adventure in nature. The Mahoosuc Arm is characterized by steep ascents and rocky outcrops, providing a challenging hike. It is situated near the Mahoosuc Notch, often referred to as the "toughest mile" of the Appalachian Trail due to its boulders and narrow passages. The region is rich in biodiversity, offering a glimpse of the unique flora and fauna of the area.