Mason Island is a island located in Montgomery County, Maryland. It appears on the Waterford USGS 7.5-minute topographic quadrangle. The nearest populated place is Martinsburg, approximately 1.8 miles to the ESE.
Montgomery County · Maryland
Mason Island is a island located in Montgomery County, Maryland. It appears on the Waterford USGS 7.5-minute topographic quadrangle. The nearest populated place is Martinsburg, approximately 1.8 miles to the ESE.