Sleddale Hall, Cumbria In the cult 1987 film 'Withnail and I' ‘Crow Cragg’, where Withnail and Marwood end up “on holiday by mistake”, is Sleddale Hall, a derelict cottage, dating from at least 1802, alongside Wet Sleddale Reservoir, just west from the A6, near Shap. The building is owned by United Utilities and should not be entered. in Public bookmarkswith cottagecraggcrowcumbriasleddalewithnailandi