mini ninjas chaper 4 help with big gates??

i am stuck at the part in chapter 4 in water wilderness where you have to find 2 levers to open the big gate, i found 1 on a square post but i am stuck as to where the other one is does anyone have any luck finding it??

if you go to the far left where the sunken roofs are you can clib up the building keep following the route round and you will find the 2nd lever