A video work showing time lapse footage of an artificial island off the Lincolnshire coastline. Constructed in the 1970s as an experimental freshwater reservoir, Outer Trial Bank is accessible only at low tide across an expanse of mud flats and is no longer marked on Ordnance Survey maps. Henderson set up his cameras at low tide, leaving them in position to capture a view normally only seen by seabirds, who nest in their thousands on the island.