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The designation of wilderness areas typically falls under the purview of government agencies responsible for land management, such as the U.S. Forest Service, the National Park Service, or the Bureau of Land Management (BLM) in the United States. These agencies follow specific procedures outlined in laws such as the Wilderness Act of 1964, which provide guidelines for designating and managing wilderness areas.
Designating private property as a wilderness area would require a complex process involving legal considerations, environmental assessments, public input, and often congressional approval. It typically involves the purchase or acquisition of private land by the government, either through negotiation, purchase, or donation, followed by the formal designation of that land as a wilderness area.