Gallox Bridge, Dunster of Dunster, with two arches over the River Avill. It has a roadway width of , a total width of and is long. The side of the bridge each have four narrow chamfered ribs. The approach from the village is via a raised causeway. Gallox Bridge, Dunster The Gallox Bridge in Dunster, Somerset, England dates from the 15th century. It has been designated as a Grade I listed building and scheduled monument. The bridge is in the guardianship of English Heritage. The stone packhorse bridge crosses the River Avill at the southern end of the village, below Dunster Castle at
Dunster Avill, offering a natural defence and making the village an inland port. Nearby is the Dunster Park and Heathlands Site of Special Scientific Interest noted for nationally important lowland dry heath, dry lowland acid grassland, wood-pasture with veteran trees and ancient semi-natural oak woodland habitats. The fauna of the lowland heath includes the heath fritillary ("Mellicta athalia"), a nationally rare butterfly. The assemblage of beetles associated with the veteran trees is of national significance because of the variety and abundance of species. Along with the rest of South West England, Dunster has a temperate climate which is generally wetter and