Retaining walls on terrain
Create a terrain level change along a line and choose its upper side.
The terrain Retaining Wall tool creates a retaining breakline: it changes the ground level across a drawn line. Its Inspector controls the terrain transition and retained height. Use a separate hardscape wall object when you need physical wall geometry and its own dimensions or materials.
Draw the line
In the Terrain workspace, open Model and choose Retaining Wall. Click at least two points for its centre-line, then press Enter. Esc cancels and discards the unfinished line. If numeric input or snap references are active, Esc clears those first. Point order determines the meaning of left and right.
Set the retaining behavior
Select the line and use the Inspector. Check Retains terrain, enter Drop height (m), and choose Upper side (walking along path). Change Constraint type, Edge blend distance and Blend curve as needed.
Inspect both sides
Use a 3D view, contours or a profile to check the retained level and transition. These settings modify the terrain; the panel does not provide wall cap material, drainage-at-base or structural-design controls.
Change or remove the edit
Select the object again to adjust it. Undo reverses recorded changes. Removing the retaining terrain object is separate from removing any hardscape wall you placed alongside it.