Question for Vue 5 Infinite

I’m trying to make some vertical scaling terrains. I’ve made a series procedural plains that are rotated at a 90 degree angle to make them vertical. I’ve placed them in specific areas to where I want the walls of a mountain thing to be. I’ve tried to blend together, but couldn’t. Is there a way to weld the walls together seamlessly? Thanks :D.

Here’s a screenshot of the workarea.

GBP