All data required for accomplishing this tutorial is available in the Georeferenced Terrain Generation Add-On starting from the UNIGINE 2.7.1 SDK (Engineering and Sim editions only). All you need is just install the add-on and use the assets according to instructions given in the tutorial.
In this tutorial:
00:00 - Introduction
00:30 - Landscape Tool interface overview
Configuring generation settings
02:36 - Adding data sources and setting up their parameters
Creating tags to filter data from the sources
05:20 - Generating a georeferenced terrain using imagery and elevation data
06:06 - Editing generated terrain with brushes
06:38 - Generating vegetation and detail masks using landcover data
08:27 - Adding and configuring terrain details
10:10 - Using vector data to generate roads and point objects
Basic road generation parameters
12:03 - Adding unique objects
12:37 - Using 2.5D Buildings feature for city generation
14:12 - Optimizing generated terrain and objects (LOD settings and material optimizations)