ONE of the biggest rock festivals to ever take place in Hertfordshire is just weeks away and we want you to be there. We have teamed up with the promoters of Sonisphere to offer 20 of our readers the chance to win a pair of tickets to the event, which is taking place at Knebworth House on August 1 and 2. Topping the bill at the two-day festival will be music legends Metallica and Linkin Park. Tickets have been selling like hot cakes, so why not enter our great competition to ensure that you have a place in the crowd?