Saturday 20th of July & Sunday 28th of July - Design your own Chessington Rock and make someone smile! Paint a rock, take a picture, share it onto Facebook and then hide it. Join in this fun activity for all ages. We have teamed up with 'Chessington Rocks' and their Facebook page to host paint days and social events throughout the year. £1 per person (adult/child) includes a rock, paint/pens, soft drink and a brownie.