In the Material settings, set to "Displacement and Bump."
Before importing anything, unzip the folder to see the file formats. You will typically find: : The 3D mesh files of the terrain.
Under , click the + button and select the folder where you unzipped the files.
: Always run an antivirus scan on .zip files from shared resource sites.
Since these files are "Full" versions, they often rely on for high detail: Ensure your render engine is set to Cycles .
Knowing that will help me give you more specific installation steps.