Getting started with the Terrain Toolbox | Package Manager UI website
GitHub - needle-mirror/com.unity.terrain-tools: [Mirrored from UPM, not affiliated with Unity Technologies.] 📦 The Terrain Tools package adds additional Terrain sculpting brushes and tools to Unity. This add-on toolset is suitable if you
Terrain Tools | Terrain | Unity Asset Store
Working with the Terrain Editor - Unity Learn
How to Use Terrain with URP in Unity 2020 | Beginner Tutorial - YouTube