Ōnuma is a picturesque district located in the southern part of Hokkaido, Japan. It is known for its stunning natural beauty, with lush forests, crystal-clear lakes, and majestic mountains surrounding the area. The centerpiece of Ōnuma is the Ōnuma Quasi-National Park, which is home to the beautiful Lake Ōnuma and Mount Komagatake. The district is a popular destination for outdoor enthusiasts, offering a wide range of activities such as hiking, camping, and birdwatching. Visitors can also enjoy boating and fishing on the tranquil waters of Lake Ōnuma, or take a leisurely stroll along the park's well-maintained walking trails.