Brooding and primeval, the forests of Udzungwa seem positively enchanted: a verdant refuge of sunshine-dappled glades enclosed by 30-metre (100 foot) high trees, their buttresses layered with fungi, lichens, mosses and ferns.
Udzungwa is the largest and most biodiverse of a chain of a dozen large forest-swathed mountains that rise majestically from the flat coastal scrub of eastern Tanzania. Known collectively as the Eastern Arc Mountains, this archipelago of isolated massifs has also been dubbed the African Galapagos for its treasure-trove of endemic plants and animals, most familiarly the delicate African violet.
Udzungwa alone among the ancient ranges of the Eastern Arc has been accorded national park status. It is also unique within Tanzania in that its closed-canopy forest spans altitudes of 250 metres (820 feet) to above 2,000 metres (6,560 ft) without interruption.
Not a conventional game viewing destination, Udzungwa is a magnet for hikers. An excellent network of forest trails includes the popular half-day ramble to Sanje Waterfall, which plunges 170 metres (550 feet) through a misty spray into the forested valley below.
The more challenging two-night Mwanihana Trail leads to the high plateau, with its panoramic views over surrounding sugar plantations, before ascending to Mwanihana peak, the second-highest point in the range.
Ornithologists are attracted to Udzungwa for an avian wealth embracing more than 400 species, from the lovely and readily-located green-headed oriole to more than a dozen secretive Eastern Arc endemics.
Four bird species are peculiar to Udzungwa, including a forest partridge first discovered in 1991 and more closely related to an Asian genus than to any other African fowl.
Of six primate species recorded, the Iringa red colobus and Sanje Crested Mangabey both occur nowhere else in the world – the latter, remarkably, remained undetected by biologists prior to 1979.
Undoubtedly, this great forest has yet to reveal all its treasures: ongoing scientific exploration will surely add to its diverse catalogue of endemics.
About Udzungwa Mountains National Park
Size: 1,990 sq km (770 sq miles).
Location: Five hours (350 km/215 miles) from Dar es Salaam; 65 kms (40 miles) southwest of Mikumi.
Drive from Dar es Salaam or Mikumi National Park.
What to do
From a two-hour hike to the waterfall to camping safaris.
Combine with nearby Mikumi or en route to Ruaha.
When to go
Possible year round although slippery in the rains.
The dry season is June-October before the short rains but be prepared for rain anytime.
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