CVar cameraTerrainTilt

Automatically changes the camera angle based on terrain. If the character climbs a slope, the camera will rotate upwards; if the character descends it will rotate downwards. Only works if a smart following style is enabled.

Default Setting

 * 0 :Disabled

Possible Settings

 * 0 :Disabled
 * 1 :Enabled

Changing this setting
In-game, type the following /console cameraTerrainTilt setting

Alternatively, you can exit wow, open the Config-cache.wtf file, and add the following line: SET cameraTerrainTilt "setting"