Crossrail reached another important milestone today as 1,000-tonne tunnel boring machine Elizabeth broke into one of Europe's largest mined caverns, 40m below Stepney Green in the East End of London. Elizabeth, along with her sister machine Victoria, is completing the longest tunnel drive on the Crossrail project, from Limmo Peninsula near Canning Town to Farringdon, a distance of 8.3 kilometres (5.16 miles). Crossrail Project Manager Peter Main gives an overview of the work involved in reaching this significant milestone in delivering Crossrail's longest tunnel drive between Limmo Peninsula, in Canning Town, and Farringdon. For more information about Crossrail tunnelling visit: http://www.crossrail.co.uk/ Video released in 2013