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Altha Lake is a serene body of water nestled high in the Sierra Nevada mountains, specifically in eastern Madera County, California. It is situated at an elevation of 9,714 feet (2,961 meters) and spans approximately 12 square acres. The lake is a notable feature within both the Ansel Adams Wilderness and the Sierra National Forest.

Anglers visiting Altha Lake can expect to find Rainbow Trout in its clear waters. It's a popular spot for those who enjoy fishing in a remote, mountainous setting.

While the intro suggests visiting during warmer months when trails are clear of snow, Altha Lake is at a high elevation (9,714 feet). Winter conditions would be extremely challenging, with heavy snow and potentially impassable trails. It is generally not recommended for winter hiking unless you are an experienced mountaineer with proper gear and avalanche awareness.

The Altha Lake trail is rated with black diamond difficulty, indicating it is a challenging route for hikers. This means you should expect steep terrain and demanding conditions, requiring proper hiking footwear, layers of clothing, and sufficient water.

Yes, as Altha Lake is located within the Ansel Adams Wilderness and the Sierra National Forest, permits may be required for overnight stays, especially during peak seasons. It's always best to check with the Sierra National Forest or Ansel Adams Wilderness authorities for the most current regulations regarding day use and wilderness permits before your visit.

Given the black diamond difficulty rating of the trails and the remote, high-altitude setting, Altha Lake is generally not considered suitable for young children or families seeking easy walks. The challenging conditions are better suited for experienced hikers and adventurers.

Dogs are generally permitted in the Ansel Adams Wilderness, but they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all visitors. Owners are also responsible for packing out all pet waste. Always check the latest regulations from the U.S. Forest Service before bringing your dog.

While specific Altha Lake trailhead parking information is not detailed, access typically involves navigating unpaved roads within the Sierra National Forest. A suitable vehicle, such as one with high clearance, is advisable. Parking areas can fill up quickly during peak season, so arriving early is often recommended.

Altha Lake is located in a remote wilderness area, and there are generally no direct public transportation options available to reach its trailheads. Visitors typically need to use a private vehicle to access the area.

Altha Lake was likely named for Altha Branson Summers, who was the wife of a local hotel owner. This tradition of naming natural landmarks after individuals helps preserve historical connections to the region.

Altha Lake is situated in a remote part of the Ansel Adams Wilderness, so there are no amenities, cafes, or direct accommodation options immediately nearby. The closest services would likely be found in larger towns such as Mammoth Lakes, which is part of the broader region but still a significant distance away. Visitors should plan to be self-sufficient for their trip.