Hidden weapons on Regret

Get on the mission Regret of Halo 2. I did it on easy so, you can try it too. Get to the part were you fight the two Hunters. Walk torwards the Gondola(The thing that carries you across the lake), but stop right in front of it, dont walk on, now walk to your right, until you get to the ledge. Now look down of the right ledge. You should see a platform connecting to the giant platform you fought the Hunters on. The wall right beside the platform will hold weapons, stuck half way through the wall(You can still pick them up). WARNING: (First)Warning if you jump down on the platform yo cant get back up (Second)Sometimes the weapons will not appear, they usually will be there, but not always. (Third)I'm not sure what difficulty you have to be on, I did it on Easy, have fun. :)