Camera parallaxing

I am doing a 2.5D platformer. and wanted there to be mountain layers that react to the camera. is there a tutorial on parallaxing?

Well, parallaxing is a solution for 2D games to fake a 3D effect, but since Unity is already 3D, you don’t really need to do that! Instead, why don’t you just make a bunch of flat planes with mountain textures on them, and then place them at various distances from the camera and let perspective do the rest? If you need the textures to loop forever, you can instantiate copies on either side of the ‘cardboard cutout’ background pieces whenever the camera moves a certain distance.