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.
Join Us at an Upcoming Event

February 16
Planting in Burien 
February 22
Nursery Potting at Lake Sammamish State Park Read the Latest News
