Galbraith Mountain is the common name for North Lookout Mountain, located between the communities of Sudden Valley and Bellingham, Washington. A 3,125-acre (12.65 km²) area was owned by the Trillium Corporation until April 1, 2010, when the company surrendered the property to Polygon Financial Partners instead of defaulting on the loan held by Polygon. Galbraith Mountain has two main summits, which are 1,365 ft (416 m) and 1,785 ft (544 m) high. Though they are not either the highest points on Lookout mountain, they are prominent from all over Western Whatcom County. The Whatcom Independent Mountain Pedalers (WHIMPs) created and maintained a large trail system under a 2005 contract with Trillium.