Board Thread:Episode Discussion/@comment-26397825-20170107153155/@comment-4010415-20170111222354

But the bricks are also down the path that Ruby and Jaune took. Just look between the branches in the upper left corner of this screenshot.

Not to mention that we don't see any more bricks ahead of Nora and Ren, but we do see them ahead of Jaune and Ruby.

And we've seen hexagonal bricks in pretty much all the paths RNJR has been following, though they've been gray with green moss before this. These ones are probably more of a yellow-brown because of the dirt and how it's more of a swampy-ish kind of area than a forest one.