Black Stripe Across Map?

[Prideland]

I am making a map, but there are black stripes going through it? At first it was  yellow and black stripes, but now i changed it to green and black, how do i get rid of the black stripes in my map? Please & thank you

[nicekind]

I think the problem is in the mask. Were the colors blue green and red?

[Prideland]

Yes, the colours on the mask were blue green & red

[JackobLoveu]

Probably the terrain?

[Prideland]

What about the terrain?

[Flying cow]

It's the terrain mask, it helps you put various terrains, like rocky or sandy in certain areas. You can just get rid of it by removing it from the little box where you type it in, or you can add your various rocky, or grassy terrains where you please, making your map look a little more creative and different.

Hope I explained it well :3

[JackobLoveu]

Yup'