English: Bayfield Lake in the grounds of Bayfield Hall. The River Glaven flows just 17 km, through one of the most beautiful valleys in England. Rising from tiny headwaters in lower Bodham/ Baconsthorpe the main river begins just below Selbrigg Pond where three streams combine at the outfall. Thereafter it descends wooded hills of glacial debris and passes through lush countryside and picturesque flint villages, before meeting the sea behind the famous shingle spit at Blakeney point. The river has a catchment area of approximately 115 km2 and falls 50 m from its source to the present tidal limit at Cley sluice. Sub-surface geology is predominantly chalk and in parts of the lower valley the river flows over a chalk bed. Land-use adjoining the river consists of a mix of arable land and coniferous plantations in the upper reaches above Edgefield, grazing meadows in the middle reaches and low-lying former washlands below Glandford mill. The long, thin lake at Bayfield Hall in many ways epitomises the beauty of the lower Glaven valley. It was dug in the late eighteenth century for ornamental purposes. In the late nineteenth century an 'extravaganza' tunnel was built into the valley side so that the Glaven could be partly diverted around the lake. This tunnel remains operational today. This image shows the beauty of the lake.