Preparations for the 2010 British Grand Prix at Donington Park have got underway, with construction work commencing at the Leicestershire track during the weekend.
Donington received planning approval for its £100 million rebuild programme on Thursday.
In addition to a new paddock, the work will also see an additional infield loop constructed and parts of the existing track reprofiled, as well as the entire circuit being brought up to modern Formula One safety standards.
Circuit boss Simon Gillett had always maintained that work would progress rapidly once planning permission had been gained.
"You will see things sprouting out of the ground quite quickly," Gillett told autosport.com on Friday.
"Groundwork is first, but the first big change will be the tunnel. We are going to have a new tunnel between Coppice and McLeans, an HGV tunnel, and that will be started today and completed by February 20.
"The next phase then will be hitting the pit and paddock, and probably by the MotoGP in July you will see the complete building up on site."
Bernie Ecclestone will inspect the rebuild's progress in September and again next March to ensure that the work is on schedule for completion in time for the summer 2010 race date. Donington has a ten-year contract to host the GP from next season.