Green park tube station will be your starting point for a truly unique adventure the master of the hunt will be on hand to distribute treasure hunt packs full of tricky challenges that will challenge body and mind take part in your exciting treasure hunt in teams of 2 to 6 over two hours at the end of the hunt prizes will be awarded to the 1st 2nd 3rd and 4th placed teams of official london underground merchandise plus consolation prizes for all teams taking part making it a fun day out