Slam Dunk Festival - South is a one-day alternative music festival at Hatfield Park in Hatfield, run at a stated maximum capacity of 27,000 plus staff and artists.
Its audience spans emo, pop-punk, metalcore, ska and rock. The event is all ages, though the organiser states there are no activities or entertainment directly for children.
The South edition has no camping. The site has a pedestrian entrance opposite Hatfield railway station and road access via the A414, A1000, A1(M) junction 4 and M25 junction 23.