The mounds were once part of a larger stretch of a prairie ecosystem encompassing approximately 180,000 acres (73,000 ha), spanning from present-day Joint Base Lewis–McChord through Chehalis and into Oakville.
Rockaway Beach, Oregon (Wikipedia) Rockaway Beach is a city in Tillamook County, Oregon, United States. As of the 2020 census, Rockaway Beach had a population of 1,441.