zoom in on my landscape turn material terrain in black

Hi, I’m trying to gain experience with Unreal and it’s difficult to explain my problem. I’m manipulating a project with complex materials so I can practice. Now it happens that everything seems to work, but as I zoom in on the ground progressively the textures disappear turning black in some areas which get bigger and bigger the further I zoom. This does not happen at all points on the ground. What can I do? the terrain material in the terrain static mesh editor has a weird black side on top could that be the problem? and originally I think it was snow. in the original project. However I don’t know how to change it. I’ll try to attach a couple of pictures. Thanks to anyone who tries to answer me.

It looks like you’ve coded something in the material. Have you, by chance, put something in there to change textures / texture size depending on camera distance?