Castle Island is a island located in San Juan County, Washington. It appears on the Lopez Pass USGS 7.5-minute topographic quadrangle. The nearest populated place is Islandale, approximately 2.4 miles to the NW.
San Juan County · Washington
Castle Island is a island located in San Juan County, Washington. It appears on the Lopez Pass USGS 7.5-minute topographic quadrangle. The nearest populated place is Islandale, approximately 2.4 miles to the NW.