Who protested the flooding of Hetch Hetchy Valley?

The protest against the flooding of Hetch Hetchy Valley was led prominently by John Muir, a renowned naturalist and one of the founding figures of the environmental movement in the United States. Muir passionately advocated for the preservation of the valley due to its stunning natural beauty and ecological significance. He believed that the valley should be protected for future generations rather than sacrificed for the sake of creating a reservoir for water supply. Muir's efforts and eloquent writings played a crucial role in raising awareness about the importance of preserving natural landscapes and sparked significant public interest in environmental issues. His opposition was instrumental in the larger conservation movement during the early 20th century, showcasing the tension between development and environmental preservation.