Polar Bear Pit and Lion and Tiger Ravines, Dudley Zoo

The Polar Bear Pit and Lion and Tiger Ravines form a distinctive group within Dudley Zoo. Constructed in the 20th century as part of the zoo’s Tecton development, the central element is a circular polar bear pit, approached by stairs, ramps, and viewing terraces on its sides. Flanking the polar bear pit are ravine enclosures for lions and tigers, built against the natural slope of the hillside. A viewing terrace runs along the western edge of the entire arrangement. The structures are primarily of reinforced concrete.

The deep, circular polar bear enclosure is surrounded by viewing terraces that feature complex variations in their levels and circulation. A distinctive parapet and railing design, consisting of a low wall with coping raised on elliptical steel struts, is used as a balustrade and handrail to the staircases and viewing areas. Inside the polar bear pit are curving, geometric platforms at multiple levels, including an upward-sweeping projection intended as a diving platform. The base of half the pit contains an eight-foot-deep pool.

The lion and tiger ravines mirror the circular enclosure with their curved ends. Within the ravines are projecting platforms, pools, and ramps, all backed by reinforced concrete retaining walls that match the overall construction. Steps lead from the western terrace to a lower terrace, accessed via a curving block that also houses lavatory blocks underneath. The same parapet style from other Tecton animal houses throughout the zoo is integrated as a balustrade and handrail for the staircases leading to the upper viewing level.