https://player.vimeo.com/video/655329470?h=9a021ee0e4&badge=0&autopause=0&player_id=0&app_id=58479
Terrain mirrored along the X dimension, using tfMirror.
This checkbox mirrors the terrain along the X dimension.
Inverts the altitude values, mirroring along the Y dimension.
Mirrors the terrain along the Z dimension.