On the east coast you got Dora Golding (campdoragolding.com). Within Dora Golding there is a devision called Yaalozu (mountaineering) which is higly recommended for boys going/coming out of 9th grade. If you want more modern you have Morasha and Mesorah (going farther to the left- you have Lavi and others).
In the midwest you have Yeshiva Hakayitz (go to HTC.edu).
I can only speak for CDG and Kayitz and they are both amazing camps with a great staff and great atmosphere.