Welcome to the Mountains to Sound Greenway National Heritage Area
The Mountains to Sound Greenway National Heritage Area is a unique geographic corridor made up of connected ecosystems and communities spanning 1.5 million acres from Seattle to Ellensburg along Interstate-90 in Washington state. The Mountains to Sound Greenway Trust is a coalition-based organization that leads and inspires action to conserve and enhance this special landscape, ensuring a long-term balance between people and nature.
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Environmental education field trips are back!
For nearly 25 years, we have been engaging 4th-12th grade students in King County with high-quality, science-based outdoor learning opportunities that foster teamwork, nurture the imagination, increase students’ sense of ownership over their learning, and instill a conservation ethic.