a new zealand zoo , orana wildlife park , is giving visitors the thrilling opportunity to step into the lion 's den .
orana wildlife park in new zealand 's christchurch has installed a moving cage to bring you close to the lions .
the king of the jungle clambers over the cage , jumping onto the roof and sticking his tongue through the bars .
20 people , including visitors and zoo keepers , climb inside to have lunch with a lion for $ 40 .