The Salmon-Challis National Forest, located in the state of Idaho, offers a diverse range of natural wonders and recreational opportunities. Here is a summary of the forest's key features, attractions, and the best time to visit, based on information obtained from multiple independent sources.

Overview:
The Salmon-Challis National Forest covers approximately 4.3 million acres in east-central Idaho, making it one of the largest and most diverse national forests in the United States. The forest is named after the Salmon and Challis rivers, which flow through its boundaries, and it is renowned for its rugged mountains, pristine rivers, and abundant wildlife.

Reasons to Visit:
1. Outdoor Recreation: The forest provides numerous opportunities for outdoor enthusiasts, including hiking, camping, fishing, hunting, boating, and wildlife viewing. It features over 2,000 miles of trails, offering options for both novice and experienced hikers.

2. Scenic Beauty: The Salmon-Challis National Forest is characterized by breathtaking landscapes, including mountain ranges, deep canyons, alpine lakes, and wild rivers. It offers remarkable photo opportunities and immersive experiences in nature.

3. Wildlife Viewing: The forest hosts a wide array of wildlife species, such as elk, deer, bighorn sheep, moose, black bear, wolves, and numerous bird species. Wildlife enthusiasts can explore the forest's habitats to observe these animals in their natural environment.

Points of Interest:
1. Salmon River: Known as the "River of No Return," the Salmon River winds through the forest and offers exceptional whitewater rafting, kayaking, and fishing experiences. It is ideal for adventure seekers looking for thrilling water-based activities.

2. Sawtooth National Recreation Area: A portion of the Salmon-Challis National Forest is designated as the Sawtooth National Recreation Area. This area encompasses the stunning Sawtooth Mountains, offering breathtaking vistas and excellent hiking trails, including the popular Alice-Toxaway Loop.

3. Frank Church-River of No Return Wilderness: This wilderness area, within the Salmon-Challis National Forest, is the largest contiguous wilderness in the lower 48 states. It offers unparalleled solitude, outstanding backpacking opportunities, and the chance to explore rugged terrain.

Interesting Facts:
1. The Salmon-Challis National Forest contains over 200 alpine lakes, including popular destinations like Redfish Lake and Stanley Lake. These lakes provide incredible opportunities for fishing, boating, and camping.

2. The forest is home to the largest population of wild steelhead trout in the lower 48 states, making it a prime destination for anglers seeking a challenging fishing experience.

Best Time to Visit:
The best time to visit the Salmon-Challis National Forest largely depends on the desired activities. Summer (June to August) offers the warmest weather, ideal for hiking, camping, fishing, and boating. Fall (September to October) brings beautiful foliage colors and is perfect for wildlife viewing. Winter (December to February) provides opportunities for skiing, snowmobiling, and snowshoeing. However, it is important to note that some areas of the forest may be inaccessible due to snow during winter.

It is always recommended to check with official sources or visitor centers for up-to-date information regarding access, weather conditions, and any temporary closures before planning a visit to the Salmon-Challis National Forest.