Quote from terraunity on December 13, 2021, 8:36 am

This tutorial covers basic texturing on generated terrain using satellite image and terrain layers as textures. We'll create a texturing node chain from scratch via COLORS tab in TerraWorld interface and use created area masks extracted from the heightmap. Finally we will replace simple colored terrain layers with MegaScans materials for the final splatmapping on surface.

Source: https://forum.unity.com/threads/terraworld-automatic-level-designer-for-real-world-locations.784217/page-6#post-7089178