At midday, sunlight pours into a sinkhole and turns the water below an almost unreal cobalt blue. The Sleeping Pool (Chirorodziva) is the centrepiece of the Chinhoyi Caves, a system of limestone and dolomite caverns about 115 kilometres north-west of Harare and one of the most striking natural Zimbabwe tourist attractions.
The caves formed as slightly acidic groundwater slowly dissolved the rock over millions of years, until parts of the roof collapsed to create the open sinkhole. The Shona name Chirorodziva is usually translated as "pool of the fallen", recalling an episode when people were thrown into the water by raiders. The pool's remarkable clarity and constant temperature, around 22 °C all year, give it its intense colour.
More than 80 metres deep, the pool is a notable cave-diving site. In the 19th century Chief Chinhoyi and his people hid here from Nguni raiders; today the caves are a recreational park managed by Zimparks.
The site is compact and easy to explore in an hour or two, yet it feels like a hidden world, with ferns and fig trees clinging to the walls of the sinkhole and swallows darting through the shafts of light. Underwater, the cave system extends far beyond what can be seen from the surface, with passages explored by specialist divers.
The caves are just off the A1, nine kilometres north-west of Chinhoyi town – about 90 minutes from Harare and an ideal break on the road to Lake Kariba or Mana Pools. If you would rather not drive, the caves feature on the 14-day Zimbabwe expedition tour.
From the car park, stone steps and paths lead down into the caves and around the rim of the sinkhole. Local guides at the entrance can show you the main viewpoints and share the legends attached to the site.
Paths are slippery, so wear good shoes and bring a torch. Swimming is not allowed outside organised dives.
Entry fees are payable at the gate, and the site is suitable for most fitness levels, though the steps into the Dark Cave are steep. Keep children close near the unfenced edges.
Midday gives the brightest blue; divers find the clearest water from May to October.
The dry winter months also offer pleasant temperatures for travel, while the rainy season can make paths muddier and the pool slightly less clear.
A campsite and small motel stand by the entrance, with basic hotels in town.
Chinhoyi town has supermarkets and fuel stations, making it a convenient stop to stock up before continuing north to the Zambezi Valley.
Far smaller than Victoria Falls or Great Zimbabwe, but its beauty surprises nearly everyone.
It is one of the few places in southern Africa where you can see a flooded cave system so easily, and a perfect break on a long road journey.
An hour's detour on the road north rewards you with one of the bluest pools on the continent – it is also a stop on the 22-day tour of Zimbabwe from Harare.