The Blackstairs Mountains are a mountain range located on the border between County Carlow and County Wexford in Ireland. They are known for their rugged terrain and scenic beauty, making them a popular destination for hikers and outdoor enthusiasts. The highest peak, Mount Leinster, reaches an elevation of 795 meters. The mountains are part of the larger Eastern Highlands and are characterized by a mix of heather-covered slopes and rocky outcrops. The area is rich in biodiversity, home to various plant and animal species. The Blackstairs also offer stunning views of the surrounding countryside, including the River Barrow valley.