How to create this infinite moving terrain (SPECIFIC DESCRIPTION BELOW)

Hi! I encountered something I would like to test, but I cannot figure out how to do it.

https://www.youtube.com/watch?v=w2fWnx0RTjE&t=1188s&ab_channel=GoldenDynasty

(Skip To Time 4:44)

There is some infinite moving terrain as you watch. Would anyone know how to do this? Thanks.

1 Like