That's national forest signage, not national park signage. National forests are managed by the U.S. Forest Service and national parks are managed by the Nation

That's national forest signage, not national park signage. National forests are managed by the U.S. Forest Service and national parks are managed by the National Park Service and they have different uses/purposes. https://www.doi.gov/blog/americas-public-lands-explained https://www.doi.gov/blog/americas-public-lands-explained