Nairobi, March 17 -- The Tanzanian government is seeking approval of Unesco to upgrade roads inside Serengeti National Park in the north after its earlier plan to construct a tarmac road across the park hit a snag.

The government had planned, between 2005 and 2012, to construct a 452-kilometre tarmac highway to link Arusha in northern Tanzania to Musoma on the shores of Lake Victoria but shelved the plan after a civil suit was lodged by animal welfare groups opposing the road across the Serengeti.

Government Spokesperson Mobhare Matinyi said in Dodoma on March 10 that the government had drafted a technical document for submission to Unesco, seeking approval to upgrade into tarmac and concrete pavements, the roads inside the park.

"Our ...