The Digby Gut is a narrow channel connecting the Bay of Fundy with the Annapolis Basin. The town of Digby, Nova Scotia is located on the inner portion of the western side of the Gut. The eastern entrance is marked by the Point Prim Lighthouse. Strong tidal currents, numerous rocky ledges, frequent fogs and unpredictable winds make it a dangerous passage requiring a pilot or local knowledge. Tide flows create 5 knot tidal currents and create numerous whirlpools and eddies. The gut is about a half nautical mile in width and bordered by high rocky cliffs. It marks a break in the North Mountain ridge along the Annapolis Valley and is the eastern end of Digby Neck. Digby Gut had its origins as the northern terminus of the ancient Bear River, part of which is now a drowned river valley.