Udzungwa is the largest and with most biodiversity and 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 as the African Galapagos for its treasure-trove of endemic animals and plants, most familiarly being the delicate African violet.
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 alone among the ancient ranges of the Eastern Arc has been accorded the national park status. It is also unique within Tanzania in that its closed-canopy forest spans altitudes of 250 meters (820 feet) to above 2,000 meters (6,560 ft) without interruption.
Although 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 meters (550 feet) through a misty spray into the forested valley below.