Summer Solstice 20 - 22 June 2011

"The summer solstice observance at Avebury is expected to be very busy and there will be limited car parking as a result.

"From Monday 20 June until mid afternoon on Wednesday 22 June there will be a temporary campsite alongside the car park, opening at 9am on Monday 20 June and closing at 2pm on Wednesday 22 June. There will only be 93 tent spaces, allocated on a first-come, first-served basis. They are expected to be in high demand."

More here - http://www.nationaltrust.org.uk/main/w-vh/w-visits/w-findaplace/w-avebury/w-avebury-parking.htm