Daraja la mungu (swahili) or God's bridge in english is a large natural bridge that connect the two banks of Kiwira river in Mbeya region Tanzania. It has a width slightly larger than that of a single lane bridge and a length of about 50 metres. Despite not being engineered or designed to do so, the bridge can withstand large loads such as herds of cattle crossing.
It is believed that the bridge was formed millions of years ago when water flowed through cooling lava that spewed from the nearby mt. Rungwe, creating a path underneath what became a hard rock structure. Since then the bridge has withstood all tests of nature and time to a level that is better than any man made bridge, most of which have a reliable life span of a century or less. The name 'Daraja la mungu' was coined by the locals due to its Godly like design along with other traditional beliefs and stories.
Since its recognition as a popular tourist site, there has been another bridge bridge constructed about a hundred metres north west of it, mainly to assist the old bridge on a job it has done since long before the dawn of civilization.